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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D. C. 20549



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FORM 10-Q



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|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------

For the quarterly period ended: March 31, 2007

OR



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

For the transition period from  to

Commission File Number: 0-27140



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NORTHWEST PIPE COMPANY

(Exact name of registrant as specified in its charter)



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|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|OREGON                                                         |  | 93-0557988                          
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)

200 S.W. Market Street

Suite 1800

Portland, Oregon 97201

(Address of principal executive offices and zip code)

503-946-1200

(Registrants telephone number including area code)



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Indicate by check mark whether the Registrant
(1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and
(2) has been subject to such filing requirements for the past 90 days:    Yes  x    No ̈

Indicate by check mark whether the registrant is a large accelerated filer, an
accelerated filer, or a non-accelerated filer. See definition of accelerated filer and large accelerated filer in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer ̈Accelerated Filer  x    Non-accelerated filer ̈

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes ̈No  x





|                                       |  |                                    
|-------------------------------------- |  | -----------------------------------
|Common Stock, par value $.01 per share |  | 8,933,593                          
|(Class)                                |  | (Shares outstanding at May 1, 2007)



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##### Table of Contents

NORTHWEST PIPE COMPANY

FORM 10-Q

INDEX



|                                                                                              |  |     
|--------------------------------------------------------------------------------------------- |  | ----
|                                                                                              |  | Page
|PART I - FINANCIAL INFORMATION                                                                |  |     
|                                                                                              | 
|Item 1. Consolidated Financial Statements:                                                    |  |     
|                                                                                              | 
|Consolidated Balance Sheets as of March 31, 2007 and December 31, 2006                        |  | 2   
|                                                                                              | 
|Consolidated Statements of Income for the three months ended March 31, 2007 and 2006          |  | 3   
|                                                                                              | 
|Consolidated Statements of Cash Flows for the three months ended March 31, 2007 and 2006      |  | 4   
|                                                                                              | 
|Notes to Consolidated Financial Statements                                                    |  | 5   
|                                                                                              | 
|Item 2. Managements Discussion and Analysis of Financial Condition and Results of Operations |  | 9   
|                                                                                              | 
|Item 3. Quantitative and Qualitative Disclosure About Market Risk                             |  | 14  
|                                                                                              | 
|Item 4. Controls and Procedures                                                               |  | 14  
|                                                                                              | 
|PART II - OTHER INFORMATION                                                                   |  |     
|                                                                                              | 
|Item 1A. Risk Factors                                                                         |  | 15  
|                                                                                              | 
|Item 6. Exhibits                                                                              |  | 15  
|                                                                                              | 
|Signatures                                                                                    |  | 16  



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##### Table of Contents

NORTHWEST PIPE COMPANY

CONSOLIDATED BALANCE SHEETS

(Unaudited)

(Dollar amounts in thousands)



|                                                                                                                  |  |                |         |   |                   |   |         |  
|----------------------------------------------------------------------------------------------------------------- |  | -------------- | ------- | - | ----------------- | - | ------- | -
|                                                                                                                  |  | March 31, 2007 |         |   | December 31, 2006 |  
|                                                                                                                  | 
|Assets                                                                                                            |  |                |         |   |                   |   |         |  
|Current assets:                                                                                                   |  |                |         |   |                   |   |         |  
|Cash and cash equivalents                                                                                         |  | $              | 180     |   |                   | $ | 4,259   |  
|Trade and other receivables, less allowance for doubtful accounts of $974 and $823                                |  |                | 69,714  |   |                   |   | 68,425  |  
|Costs and estimated earnings in excess of billings on uncompleted contracts                                       |  |                | 63,966  |   |                   |   | 74,353  |  
|Inventories                                                                                                       |  |                | 74,986  |   |                   |   | 79,300  |  
|Refundable income taxes                                                                                           |  |                | 2,861   |   |                   |   | 5,889   |  
|Deferred income taxes                                                                                             |  |                | 4,460   |   |                   |   | 3,134   |  
|Prepaid expenses and other                                                                                        |  |                | 1,966   |   |                   |   | 2,154   |  
|                                                                                                                  |  |                |         |   |                   |   |         |  
|Total current assets                                                                                              |  |                | 218,133 |   |                   |   | 237,514 |  
|Property and equipment less accumulated depreciation and amortization of $42,417 and $41,328                      |  |                | 165,328 |   |                   |   | 160,776 |  
|Goodwill                                                                                                          |  |                | 21,451  |   |                   |   | 21,451  |  
|Prepaid expenses and other                                                                                        |  |                | 4,894   |   |                   |   | 4,710   |  
|                                                                                                                  |  |                |         |   |                   |   |         |  
|Total assets                                                                                                      |  | $              | 409,806 |   |                   | $ | 424,451 |  
|                                                                                                                  |  |                |         |   |                   |   |         |  
|Liabilities and Stockholders Equity                                                                              |  |                |         |   |                   |   |         |  
|Current liabilities:                                                                                              |  |                |         |   |                   |   |         |  
|Current portion of long-term debt                                                                                 |  | $              | 12,178  |   |                   | $ | 9,663   |  
|Accounts payable                                                                                                  |  |                | 28,939  |   |                   |   | 50,865  |  
|Accrued liabilities                                                                                               |  |                | 11,768  |   |                   |   | 10,243  |  
|                                                                                                                  |  |                |         |   |                   |   |         |  
|Total current liabilities                                                                                         |  |                | 52,885  |   |                   |   | 70,771  |  
|Note payable to financial institution                                                                             |  |                | 40,600  |   |                   |   | 43,000  |  
|Long-term debt, less current portion                                                                              |  |                | 46,725  |   |                   |   | 47,915  |  
|Deferred income taxes                                                                                             |  |                | 30,433  |   |                   |   | 29,499  |  
|Pension and other benefits                                                                                        |  |                | 2,564   |   |                   |   | 2,440   |  
|                                                                                                                  |  |                |         |   |                   |   |         |  
|Total liabilities                                                                                                 |  |                | 173,207 |   |                   |   | 193,625 |  
|                                                                                                                  |  |                |         |   |                   |   |         |  
|Commitments and contingencies (Note 7)                                                                            |  |                |         |   |                   |   |         |  
|                                                                                                                  |  |               
|Stockholders equity:                                                                                             |  |                |         |   |                   |   |         |  
|Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued or outstanding                         |  |                |        |   |                   |   |        |  
|Common stock, $.01 par value, 15,000,000 shares authorized, 8,933,593 and 8,877,859 shares issued and outstanding |  |                | 89      |   |                   |   | 89      |  
|Additional paid-in-capital                                                                                        |  |                | 98,542  |   |                   |   | 97,303  |  
|Retained earnings                                                                                                 |  |                | 139,664 |   |                   |   | 135,130 |  
|Accumulated other comprehensive loss:                                                                             |  |                |         |   |                   |   |         |  
|Minimum pension liability                                                                                         |  |                | (1,696  | ) |                   |   | (1,696  | )
|                                                                                                                  |  |                |         |   |                   |   |         |  
|Total stockholders equity                                                                                        |  |                | 236,599 |   |                   |   | 230,826 |  
|                                                                                                                  |  |                |         |   |                   |   |         |  
|                                                                                                                  |  |                |         |   |                   |   |         |  
|Total liabilities and stockholders equity                                                                        |  | $              | 409,806 |   |                   | $ | 424,451 |  
|                                                                                                                  |  |                |         |   |                   |   |         |  

The accompanying notes are an integral part of these consolidated financial statements.



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NORTHWEST PIPE COMPANY

CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

(In thousands, except per share
amounts)



|                                            |  |                              |        |      |   |       
|------------------------------------------- |  | ---------------------------- | ------ | ---- | - | ------
|                                            |  | Three Months Ended March 31,
|                                            |  | 2007                         |        | 2006
|Net sales                                   |  | $                            | 90,736 |      | $ | 78,818
|Cost of sales                               |  |                              | 74,632 |      |   | 66,354
|                                            |  |                              |        |      |   |       
|Gross profit                                |  |                              | 16,104 |      |   | 12,464
|                                            |  |                             
|Selling, general and administrative expense |  |                              | 7,302  |      |   | 6,416 
|                                            |  |                              |        |      |   |       
|Operating income                            |  |                              | 8,802  |      |   | 6,048 
|                                            |  |                             
|Interest expense, net                       |  |                              | 1,604  |      |   | 1,758 
|                                            |  |                              |        |      |   |       
|Income before income taxes                  |  |                              | 7,198  |      |   | 4,290 
|                                            |  |                             
|Provision for income taxes                  |  |                              | 2,664  |      |   | 1,652 
|                                            |  |                              |        |      |   |       
|Net income                                  |  | $                            | 4,534  |      | $ | 2,638 
|                                            |  |                              |        |      |   |       
|Basic earnings per share                    |  | $                            | 0.51   |      | $ | 0.39  
|                                            |  |                              |        |      |   |       
|Diluted earnings per share                  |  | $                            | 0.49   |      | $ | 0.37  
|                                            |  |                              |        |      |   |       
|Shares used in per share calculations:      |  |                              |        |      |   |       
|Basic                                       |  |                              | 8,924  |      |   | 6,841 
|                                            |  |                              |        |      |   |       
|Diluted                                     |  |                              | 9,213  |      |   | 7,125 
|                                            |  |                              |        |      |   |       

The accompanying notes are an integral part of these consolidated financial statements.



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NORTHWEST PIPE COMPANY

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(In thousands)



|                                                                                            |  |                              |         |   |      |   |        |  
|------------------------------------------------------------------------------------------- |  | ---------------------------- | ------- | - | ---- | - | ------ | -
|                                                                                            |  | Three Months Ended March 31, |        
|                                                                                            |  | 2007                         |         |   | 2006 |  
|Cash Flows From Operating Activities:                                                       |  |                              |         |   |      |   |        |  
|Net income                                                                                  |  | $                            | 4,534   |   |      | $ | 2,638  |  
|Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |                              |         |   |      |   |        |  
|Depreciation and amortization of property and equipment                                     |  |                              | 1,135   |   |      |   | 878    |  
|Amortization of debt issuance costs                                                         |  |                              | 73      |   |      |   | 74     |  
|Deferred income taxes                                                                       |  |                              | (392    | ) |      |   | 404    |  
|Deferred gain on sale-leaseback of equipment                                                |  |                              |        |   |      |   | (355   | )
|Loss on disposal of property and equipment                                                  |  |                              | 81      |   |      |   | 9      |  
|Stock based compensation expense                                                            |  |                              | 23      |   |      |   | 73     |  
|Tax benefit of stock options exercised                                                      |  |                              | 334     |   |      |   | 3      |  
|Excess tax benefit of stock options exercised                                               |  |                              | (190    | ) |      |   | (3     | )
|Changes in current assets and liabilities:                                                  |  |                              |         |   |      |   |        |  
|Trade and other receivables, net                                                            |  |                              | (1,289  | ) |      |   | 1,970  |  
|Costs and estimated earnings in excess of billings on uncompleted contracts                 |  |                              | 10,387  |   |      |   | 1,948  |  
|Inventories                                                                                 |  |                              | 4,314   |   |      |   | (3,297 | )
|Refundable income taxes                                                                     |  |                              | 3,028   |   |      |   | 1,174  |  
|Prepaid expenses and other                                                                  |  |                              | (69     | ) |      |   | (1,540 | )
|Accounts payable                                                                            |  |                              | (21,926 | ) |      |   | 9,301  |  
|Accrued and other liabilities                                                               |  |                              | 1,649   |   |      |   | 653    |  
|                                                                                            |  |                              |         |   |      |   |        |  
|Net cash provided by operating activities                                                   |  |                              | 1,692   |   |      |   | 13,930 |  
|                                                                                            |  |                              |         |   |      |   |        |  
|Cash Flows From Investing Activities:                                                       |  |                              |         |   |      |   |        |  
|Additions to property and equipment                                                         |  |                              | (4,321  | ) |      |   | (4,939 | )
|                                                                                            |  |                              |         |   |      |   |        |  
|Net cash used in investing activities                                                       |  |                              | (4,321  | ) |      |   | (4,939 | )
|                                                                                            |  |                              |         |   |      |   |        |  
|Cash Flows From Financing Activities:                                                       |  |                              |         |   |      |   |        |  
|Proceeds from sale of common stock                                                          |  |                              | 882     |   |      |   | 50     |  
|Net payments under notes payable from financial institutions                                |  |                              | (2,400  | ) |      |   | (9,002 | )
|Payments on long-term debt                                                                  |  |                              | (122    | ) |      |   | (44    | )
|Excess tax benefit of stock options exercised                                               |  |                              | 190     |   |      |   | 3      |  
|                                                                                            |  |                              |         |   |      |   |        |  
|Net cash used in financing activities                                                       |  |                              | (1,450  | ) |      |   | (8,993 | )
|                                                                                            |  |                              |         |   |      |   |        |  
|Net decrease in cash and cash equivalents                                                   |  |                              | (4,079  | ) |      |   | (2     | )
|Cash and cash equivalents, beginning of period                                              |  |                              | 4,259   |   |      |   | 133    |  
|                                                                                            |  |                              |         |   |      |   |        |  
|Cash and cash equivalents, end of period                                                    |  | $                            | 180     |   |      | $ | 131    |  
|                                                                                            |  |                              |         |   |      |   |        |  
|Non-cash investing and financing activity:                                                  |  |                              |         |   |      |   |        |  
|Converted operating lease to capital lease                                                  |  | $                            | 1,447   |   |      | $ |       |  

The accompanying notes are an integral part of these consolidated financial statements.



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NORTHWEST PIPE COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)



|1. | Basis of Presentation
|-- | ---------------------

The accompanying unaudited financial
statements as of and for the three months ended March 31, 2007 and 2006 have been prepared in conformity with accounting principles generally accepted in the United States of America. The financial information as of December 31, 2006 is
derived from the audited financial statements presented in the Northwest Pipe Company (the Company) Annual Report on Form 10-K for the year ended December 31, 2006. Certain information or footnote disclosures normally included in
financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted, pursuant to the rules and regulations of the Securities and Exchange Commission. In the opinion
of management, the accompanying financial statements include all adjustments necessary (which are of a normal and recurring nature) for the fair statement of the results of the interim periods presented. The accompanying financial statements should
be read in conjunction with the Companys audited financial statements for the year ended December 31, 2006, as presented in the Companys Annual Report on Form 10-K.

Operating results for the three months ended March 31, 2007 are not necessarily indicative of the results that may be expected for the entire fiscal year ending December 31, 2007 or any portion thereof.



|2. | Earnings per Share
|-- | ------------------

Basic earnings per share is computed using the
weighted average number of shares of common stock outstanding during the period. Diluted earnings per share is computed using the weighted average number of shares of common stock and dilutive common equivalent shares outstanding during the period.
Dilutive common equivalent shares outstanding include the dilutive effect of in-the-money options which are calculated based on the average share price for each period using the treasury stock method. Under the treasury stock method, the amount the
option holder must pay for exercising stock options, the amount of compensation cost that the Company has not yet recognized, and the amount of tax benefits that would be recorded in additional paid-in capital when the award becomes deductible are
assumed to be used to repurchase shares. Incremental shares of 289,241 and 284,076 for the three months ended March 31, 2007 and 2006, respectively, were used in the calculations of diluted earnings per share. For the three months ended
March 31, 2007 and 2006, the calculation of diluted earnings per share included all common equivalent shares.



|3. | Inventories
|-- | -----------

Inventories are stated at the lower of cost or market.
Finished goods and Tubular Products and Fabricated Products raw material are stated at cost using the first-in, first-out method of accounting. Raw material inventories of steel coil are stated at cost on a specific identification basis. Raw
material inventories of coating and lining materials, as well as materials and supplies, are stated on an average cost basis. Inventories consist of the following:



|                       |  |                |        |                  |   |       
|---------------------- |  | -------------- | ------ | ---------------- | - | ------
|                       |  | March 31,2007  |        | December 31,2006
|                       |  | (In thousands)
|Finished goods         |  | $              | 33,630 |                  | $ | 30,716
|Raw materials          |  |                | 39,322 |                  |   | 46,533
|Materials and supplies |  |                | 2,034  |                  |   | 2,051 
|                       |  |                |        |                  |   |       
|                       |  | $              | 74,986 |                  | $ | 79,300
|                       |  |                |        |                  |   |       



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|4. | Segment Information
|-- | -------------------

The Companys operations are organized in
three business segments, which are based on the nature of the products sold. Management evaluates segment performance based on segment gross profit. There were no material transfers between segments in the periods presented.



|                    |  |                             |        |      |   |       
|------------------- |  | --------------------------- | ------ | ---- | - | ------
|                    |  | Three months endedMarch 31,
|                    |  | 2007                        |        | 2006
|                    |  | (In thousands)             
|Net sales:          |  |                             |        |      |   |       
|Water Transmission  |  | $                           | 64,581 |      | $ | 55,947
|Tubular Products    |  |                             | 22,982 |      |   | 18,900
|Fabricated Products |  |                             | 3,173  |      |   | 3,971 
|                    |  |                             |        |      |   |       
|Total               |  | $                           | 90,736 |      | $ | 78,818
|                    |  |                             |        |      |   |       
|Gross profit:       |  |                             |        |      |   |       
|Water Transmission  |  | $                           | 13,736 |      | $ | 10,173
|Tubular Products    |  |                             | 2,310  |      |   | 1,908 
|Fabricated Products |  |                             | 58     |      |   | 383   
|                    |  |                             |        |      |   |       
|Total               |  | $                           | 16,104 |      | $ | 12,464
|                    |  |                             |        |      |   |       



|5. | Recent Accounting and Reporting Developments
|-- | --------------------------------------------

In February 2007 the
Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standard (SFAS) No. 159, The Fair Value Option for Financial Assets and Financial Liabilities (SFAS 159). SFAS
159 permits companies to choose to measure many financial instruments and certain other items at fair value. SFAS 159 seeks to improve the overall quality of financial reporting by providing companies the opportunity to mitigate volatility in
reported earnings caused by measuring related assets and liabilities differently without having to apply complex hedge accounting provisions. SFAS 159 is effective for fiscal years beginning after November 15, 2007. The Company is assessing
SFAS 159 and has not determined the impact that the adoption of SFAS 159 will have on its financial position or results of operations.

In September 2006,
the FASB issued SFAS No. 157, Fair Value Measurements (SFAS 157). SFAS 157 defines fair value, establishes a framework for measuring fair value and requires enhanced disclosures about fair value measurements. SFAS 157
requires companies to disclose the fair value of its financial instruments according to a fair value hierarchy (i.e., levels 1, 2, and 3, as defined). Additionally, companies are required to provide enhanced disclosure regarding instruments in the
level 3 category, including a reconciliation of the beginning and ending balances separately for each major category of assets and liabilities. SFAS 157 is effective for financial statements issued for fiscal years beginning after November 15,
2007 and interim periods within those fiscal years. The Company is assessing SFAS 157 and has not determined the impact that the adoption of SFAS 157 will have on its financial position or results of operations.

In June 2006, the FASB ratified the consensus reached by the Emerging Issues Task Force (EITF) related to EITF Issue No. 06-3, How Taxes Collected
from Customers and Remitted to Governmental Authorities Should Be Presented in the Income Statement (That Is, Gross versus Net Presentation) (EITF 06-3). EITF 06-3 concludes that the presentation of any tax assessed by a
governmental authority that is both imposed on and concurrent with a specific revenue-producing transaction between a seller and a customer, and may include, but is not limited to, sales, use, value added, and some excise taxes on either a gross
basis (included in revenues and costs) or a net basis (excluded from revenues) is an accounting policy that should be disclosed. In addition, for any such taxes that are reported on a gross basis, an entity should disclose the amounts of those taxes
in interim and annual financial statements for each period for which an income statement is presented if those amounts are significant. The provisions of EITF 06-3 should be applied to financial reports for interim and annual reporting periods
beginning after December 15, 2006, with earlier adoption permitted. The Company will continue to use the net basis for presentation.



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In June 2006, the FASB ratified the consensus reached by the EITF related to EITF Issue No. 06-5 Accounting
for Purchases of Life InsuranceDetermining the Amount That Could Be Realized in Accordance with FASB Technical Bulletin No. 85-4, Accounting for Purchases of Life Insurance (EITF 06-5), which requires that a policyholder
consider additional amounts included in the contractual terms of the policy in determining the amount that could be realized under the life insurance policy. EITF 06-5 provides additional guidance for determining the amount to be realized, including
the policy level for which the analysis should be performed, amounts excluded and measurement criteria. EITF 06-5 is effective for fiscal years beginning after December 15, 2006. The adoption of EITF 06-5 had no impact on the
Companys financial position or results of operations.



|6. | Income Taxes
|-- | ------------

The Company adopted the provisions of FASB
Interpretation No. 48 Accounting for Uncertainty in Income Taxesan interpretation of FASB Statement No. 109 (FIN 48) on January 1, 2007. As a result of the implementation of FIN 48, the Company recognized
no material adjustment in the liability for unrecognized income tax benefits. At the adoption date of January 1, 2007, we had $697,000 of unrecognized tax benefits, all of which would affect our effective tax rate if recognized. At
March 31, 2007, we have $835,000 of unrecognized tax benefits.

The Company files numerous income tax returns in the United States Federal
jurisdiction and in many state jurisdictions. With few exceptions, the Company is no longer subject to US Federal or state income tax examinations for years before 2003.

We recognize interest and penalties related to uncertain tax positions in income tax expense. As of March 31, 2007, we have approximately $56,000 of accrued interest related to uncertain tax positions.



|7. | Contingencies
|-- | -------------

In November 1999, the Oregon Department of
Environmental Quality (ODEQ) requested performance of a preliminary assessment of the Companys plant located at 12005 N. Burgard in Portland, Oregon. The purpose of the assessment is to determine whether the plant has contributed
to sediment contamination in the Willamette River. The Company entered into a Voluntary Letter Agreement with ODEQ in mid-August 2000, and began working on the assessment. On December 1, 2000, a section of the lower Willamette River known as
the Portland Harbor was included on the National Priorities List (NPL) at the request of the U.S. Environmental Protection Agency (EPA). EPA has not fully defined the stretch of the river that will make up the site. However,
the full and final site will include all suitable areas in proximity to the contamination necessary for the implementation of the response action including upland portions of the Site that contain sources of contamination to the
sediments in the river. The Companys plant is not located on the Willamette River; it lies in what may be the uplands portion of the Portland Harbor Site. EPA and ODEQ have agreed to share responsibility for leading the investigation and
cleanup of the Portland Harbor Site. ODEQ has the lead responsibility for conducting the upland work. The actual work in both the river and uplands is being performed by various owners or operators of land and facilities within the Site.

EPA and ODEQ have notified the Company and 68 other parties of potential liability under the Comprehensive Environmental Response, Compensation and Liability Act
(CERCLA) and the Resource Conservation and Recovery Act (RCRA) with respect to the Portland Harbor Site. EPA and ODEQ have urged the Company and other parties receiving the letters to voluntarily enter into negotiations to
participate in a remedial investigation and feasibility study (RI/FS) at the Portland Harbor Site. That RI/FS is currently being conducted by a group of potentially responsible parties known as the Lower Willamette Group
(LWG). The Company, along with other parties, reached an Interim Remedial Investigation / Feasibility Study settlement in February, 2007. This agreement, if not terminated, requires the Company to make a payment of $175,000 on
June 8, 2007 to the LWG. This is an interim settlement only and does not obligate the Company to any further payment or liabilities. Therefore, the extent of the Companys participation in this work is not known, and no adjustments to the
Companys financial statements have been recorded for this matter.

In 2001, groundwater containing elevated volatile organic compounds (VOCs) was
identified in one localized area of the Companys property furthest from the river. Assessment work in 2002 and 2003 to further characterize the groundwater is consistent with the initial conclusion that a source of the VOCs is located off
site. There is no evidence at this time showing a connection between detected VOCs in groundwater and Willamette River sediments.



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ODEQ recommended a remedial investigation and feasibility study for further evaluation of both groundwater and stormwater
at the plant. On January 25, 2005, ODEQ and the Company entered into a Voluntary Agreement for Remedial Investigation and Source Control Measures. The Company completed the additional assessment work required by the Agreement and submitted a
Remedial Investigation/Source Control Evaluation Report to ODEQ on December 30, 2005. The conclusions of the report indicate that VOCs in groundwater do not present an unacceptable risk to human or ecological receptors in the Willamette River,
stormwater is appropriately managed under the Companys NPDES permit and the risk assessment screening results justify a No Further Action determination for the facility. The ODEQ review of this report is ongoing. ODEQ is expected to make its
recommendations by mid-2007.

The Company operates under numerous governmental permits and licenses relating to air emissions, stormwater run-off, and
other matters. The Company is not aware of any current material violations or citations relating to any of these permits or licenses. It has a policy of reducing consumption of hazardous materials in its operations by substituting non-hazardous
materials when possible. The Companys operations are also governed by many other laws and regulations, including those relating to workplace safety and worker health, principally the Occupational Safety and Health Act and regulations
thereunder which, among other requirements, establish noise and dust standards. The Company believes that it is in material compliance with these laws and regulations and does not believe that future compliance with such laws and regulations will
have a material adverse effect on its results of operations or financial condition.

From time to time, the Company is involved in litigation relating to
claims arising out of its operations in the normal course of its business. The Company maintains insurance coverage against potential claims in amounts that it believes to be adequate. Management believes that it is not presently a party to any
other litigation, the outcome of which would have a material adverse effect on the Companys business, financial condition, results of operations or cash flows.



|8. | Share-based Compensation
|-- | ------------------------

The Company has one active stock option
plan, the 1995 Stock Option Plan for Nonemployee Directors, which provides for the grant of nonqualified options at an exercise price which is not less than 100 percent of the fair value on the grant date. In addition, the Company has one inactive
stock option plan, the Amended 1995 Stock Incentive Plan, under which previously granted options remain outstanding and continue to vest. There were 526,968 shares of common stock reserved for issuance under the Companys stock compensation
plans at March 31, 2007, against which 517,968 options have been granted and remain outstanding. The plans provide that options become exercisable according to vesting schedules, which range from immediate for nonemployee directors to ratably
over a 60-month period for all other options. Options terminate 10 years from the date of grant.

Effective January 1, 2006, the Company adopted the
provisions of SFAS 123(R) using a modified version of prospective application. Under this transition method, compensation cost is recognized after the effective date as the requisite service is rendered for (i) the portion of outstanding
options for which the requisite service had not yet been rendered at December 31, 2005, based on the grant-date fair value of those options calculated under Statement 123 for pro forma disclosures and (ii) all share-based payments granted
subsequent to the effective date, based on the grant date fair value estimated in accordance with the provisions of SFAS 123(R). Under the modified version of prospective application, prior period financial statements have not been restated.

For the three months ended March 31, 2007 and 2006, total share-based compensation expense of $23,000 and $73,000, respectively, was included in
selling, general and administrative expense and deducted in arriving at income before provision for income taxes, and net income was reduced by $14,000 and $45,000, respectively. As of March 31, 2007, $13,000 of unrecognized compensation
expense related to nonvested options is expected to be recognized over a weighted average period of 2 months.



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##### Table of Contents

A summary of status of the Companys stock options as of March 31, 2007 and changes during the three months
then ended is presented below:



|                            |  |                    |   |  |                                        |       |                                          |      |                         |   |       
|--------------------------- |  | ------------------ | - |  | -------------------------------------- | ----- | ---------------------------------------- | ---- | ----------------------- | - | ------
|                            |  | OptionsOutstanding |   |  | WeightedAverageExercise PricePer Share |       | WeightedAverageRemainingContractual Life |      | AggregateIntrinsicValue
|                            |  |                    |   |  |                                        |       |                                          |      | (In thousands)         
|Balance, January 1, 2007    |  | 573,702            |   |  | $                                      | 15.71 |                                          |      |                         |   |       
|Options granted             |  |                   |   |  |                                        |      |                                          |      |                         |   |       
|Options exercised           |  | (55,734            | ) |  |                                        | 15.84 |                                          |      |                         |   |       
|Options canceled            |  |                   |   |  |                                        |      |                                          |      |                         |   |       
|                            |  |                    |   |  |                                        |       |                                          |      |                         |   |       
|Balance, March 31, 2007     |  | 517,968            |   |  | $                                      | 15.70 |                                          | 3.05 |                         | $ | 12,500
|                            |  |                    |   |  |                                        |       |                                          |      |                         |   |       
|Exercisable, March 31, 2007 |  | 516,367            |   |  | $                                      | 15.69 |                                          | 3.05 |                         | $ | 12,465
|                            |  |                    |   |  |                                        |       |                                          |      |                         |   |       

The total intrinsic value, defined as the difference between the current market value and the grant price, of
options exercised during the three months ended March 31, 2007 was $876,000.



|9. | Related Party Transactions
|-- | --------------------------

The Company has ongoing business
relationships with certain affiliates of Wells Fargo & Company (Wells Fargo). Wells Fargo, together with certain of its affiliates, owns more than 10 percent of our common stock, and is therefore considered a related party.
During the three months ended March 31, 2007, the Company made payments to affiliates of Wells Fargo for operating and capital lease payments, pursuant to which the Company leases certain equipment from such affiliates. During the three months
ended March 31, 2006, we made payments to affiliates of Wells Fargo for operating lease payments, pursuant to which the Company leases certain equipment from such affiliates. Payments made by the Company to Wells Fargo and its affiliates
amounted to $106,000 and $138,000, respectively, for the three months ended March 31, 2007 and 2006, respectively. Balances due to Wells Fargo and its affiliates were $1.4 million at March 31, 2007 and $0 at December 31, 2006.



|Item 2. | Managements Discussion and Analysis of Financial Condition and Results of Operations
|------- | -------------------------------------------------------------------------------------

Forward Looking Statements

This Managements Discussion and Analysis of Financial Condition and Results of
Operations and other sections of this Report contain forward-looking statements within the meaning of the Securities Litigation Reform Act of 1995 that are based on current expectations, estimates and projections about our business,
managements beliefs, and assumptions made by management. Words such as expects, anticipates, intends, plans, believes, seeks, estimates, should,
and variations of such words and similar expressions are intended to identify such forward-looking statements. These statements are not guarantees of future performance and involve risks and uncertainties that are difficult to predict. Therefore,
actual outcomes and results may differ materially from what is expressed or forecasted in such forward-looking statements due to numerous factors including changes in demand for our products, product mix, bidding activity, the timing of customer
orders and deliveries, the price and availability of raw materials, excess or shortage of production capacity, international trade policy and regulations and other risks discussed from time to time in our other Securities and Exchange Commission
filings and reports, including our Annual Report on Form 10-K for the year ended December 31, 2006. In addition, such statements could be affected by general industry and market conditions and growth rates, and general domestic and
international economic conditions. Such forward-looking statements speak only as of the date on which they are made and we do not undertake any obligation to update any forward-looking statement to reflect events or circumstances after the date of
this Report. If we do update or correct one or more forward-looking statements, investors and others should not conclude that we will make additional updates or corrections with respect thereto or with respect to other forward-looking statements.



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Overview

We are a
leading North American manufacturer of large-diameter, high-pressure steel pipeline systems for use in water infrastructure applications, primarily related to drinking water systems. Our pipeline systems are also used for hydroelectric power
systems, wastewater systems and other applications. We also make products for industrial plant piping systems and certain structural applications. These pipeline systems are produced by our Water Transmission Group from five manufacturing facilities
strategically located across the United States in Portland, Oregon; Denver, Colorado; Adelanto, California; Parkersburg, West Virginia; and Saginaw, Texas. Our Water Transmission Group accounted for approximately 71% of net sales in 2006.

Our Tubular Products Group operates two manufacturing facilities in Atchison, Kansas, and Houston, Texas and produces a range of products used in several
different markets. We currently make energy pipe, fire protection sprinkler pipe, agricultural pipe, traffic signpost systems and standard pipe that is sold to distributors and used in many different applications. Our Tubular Products Group
generated approximately 24% of our net sales in 2006.

Our Fabricated Products Group generated the remaining 5% of our net sales in 2006. Our Fabricated
Products Group primarily produces propane tanks for distribution in rural and suburban areas of the United States. These tanks range in size from 120 gallons to 1,000 gallons. All of these products are produced at our Monterrey, Mexico facility.
Recently, we completed an expansion of this facility. The new production lines are targeted towards manufacturing other steel or aluminum pressure vessels and fabricated parts, and specialty fabrications for our Water Transmission Group.

Our water infrastructure products are sold generally to installation contractors, who include our products in their bids to municipal agencies or privately-owned
water companies for specific projects. We believe our sales are substantially driven by spending on new water infrastructure with a recent trend towards spending on water infrastructure replacement, repair and upgrade. Within the total pipeline, our
products best fit the larger-diameter, higher-pressure applications. We believe, because of our reputation for quality, our long relationships and our breadth of product offerings, our products are generally included in most projects for which the
pipe falls within our manufacturing strengths.

Our Tubular Products Groups sales volume is typically driven by non-residential construction
spending, energy, highway spending and general economic conditions. We have recently refined the offerings in our Tubular Products Group to focus on products for which we believe we have a sustainable advantage and to reduce our reliance on certain
products, such as fence frameworks and mechanical tubing, which are very susceptible to import competition. This strategy resulted in an improvement in gross margin in 2006. As we look ahead, we see opportunities to increase volume through growth in
energy products, non-residential construction products and traffic signpost systems.

Overall demand for our Fabricated Products Groups propane tanks
is primarily driven by weather patterns and residential heating needs, construction activity, and general economic conditions. In the later part of 2006, we began manufacturing specialty pipe fittings for our Water Transmission Group. The initial
results of this venture were promising and we have scheduled additional water transmission work in this facility. We believe this may be the best utilization of this facility in the long-term.

Critical Accounting Policies and Estimates

The discussion and
analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these
financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an on-going basis, we evaluate our
estimates, including those related to revenue recognition and allowance for doubtful accounts. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Actual results
may differ from these estimates under different assumptions or conditions. A description of our critical accounting policies and related judgments and estimates that affect the preparation of our consolidated financial statements is set forth in our
Annual Report on Form 10-K for the year ended December 31, 2006.



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Recent Accounting Pronouncements

See Note 5 of the Consolidated Financial Statements for a description of recent accounting pronouncements, including the expected dates of adoption and estimated effects on results of operations and financial
position.

Results of Operations

The following table
sets forth, for the period indicated, certain financial information regarding costs and expenses expressed as a percentage of total net sales and net sales of our business segments.



|                                                   |  |                              |   |  |       |  
|-------------------------------------------------- |  | ---------------------------- | - |  | ----- | -
|                                                   |  | Three months ended March 31, |  
|                                                   |  | 2007                         |   |  | 2006  |  
|Net sales                                          |  |                              |   |  |       |  
|Water Transmission                                 |  | 71.2                         | % |  | 71.0  | %
|Tubular Products                                   |  | 25.3                         |   |  | 24.0  |  
|Fabricated Products                                |  | 3.5                          |   |  | 5.0   |  
|                                                   |  |                              |   |  |       |  
|Total net sales                                    |  | 100.0                        |   |  | 100.0 |  
|Cost of sales                                      |  | 82.3                         |   |  | 84.2  |  
|                                                   |  |                              |   |  |       |  
|Gross profit                                       |  | 17.7                         |   |  | 15.8  |  
|Selling, general and administrative expense        |  | 8.0                          |   |  | 8.1   |  
|                                                   |  |                              |   |  |       |  
|Operating income                                   |  | 9.7                          |   |  | 7.7   |  
|Interest expense, net                              |  | 1.8                          |   |  | 2.3   |  
|                                                   |  |                              |   |  |       |  
|Income before income taxes                         |  | 7.9                          |   |  | 5.4   |  
|Provision for income taxes                         |  | 2.9                          |   |  | 2.1   |  
|                                                   |  |                              |   |  |       |  
|Net income                                         |  | 5.0                          | % |  | 3.3   | %
|                                                   |  |                              |   |  |       |  
|Gross profit as a percentage of segment net sales: |  |                              |   |  |       |  
|Water Transmission                                 |  | 21.3                         | % |  | 18.2  | %
|Tubular Products                                   |  | 10.0                         |   |  | 10.1  |  
|Fabricated Products                                |  | 1.8                          |   |  | 9.7   |  

Three Months Ended March 31, 2007 Compared to Three Months Ended March 31, 2006

Net Sales.Net sales increased 15.1% to $90.7 million for the first quarter of 2007 compared to $78.8 million for the first quarter of 2006.

Water Transmission sales increased 15.4% to $64.6 million in the first quarter of 2007 from $56.0 million in the first quarter of 2006. Net sales for the three months
ended March 31, 2007, increased over the same period last year as a result of higher production in most of our facilities. The higher production resulted from the increased backlog at the beginning of 2007 of $198.2 million compared to $125.6
million at the beginning of 2006. Backlog decreased to $192.0 million at the end of the first quarter of 2007. Bidding activity, backlog and sales resulting from the award of new projects, or the production of current projects, may vary
significantly from period to period.

Tubular Products sales increased 21.6% to $23.0 million in the first quarter of 2007 from $18.9 million in the first
quarter of 2006. The majority of the increase in net sales over the same period last year resulted from increased energy product sales.

Fabricated
Products sales decreased by 20.1% to $3.2 million in the first quarter of 2007 from $4.0 million in the first quarter of 2006. The decrease in net sales over the same period last year was a result of a softening in the market for our propane tank
products.

No single customer accounted for 10% or more of net sales in the first quarter of 2007 or 2006.



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Gross Profit.Gross profit increased 29.2% to $16.1 million (17.7% of total net sales) in the first quarter
of 2007 from $12.5 million (15.8% of total net sales) in the first quarter of 2006.

Water Transmission gross profit increased 35.0% to $13.7 million
(21.3% of segment net sales) in the first quarter of 2007 from $10.2 million (18.2% of segment net sales) in the first quarter of 2006. Water Transmission gross profit increased for the three months ended March 31, 2007 over the same period
last year due in part to the reduction of rent expense as a result of the purchase in the fourth quarter of 2006 of manufacturing equipment that we leased under certain operating leases and certain non-recurring events that were recorded in the
first quarter of 2007.

Gross profit from Tubular Products increased to $2.3 million (10.0% of segment net sales) in the first quarter of 2007 from $1.9
million (10.1% of segment net sales) in the first quarter of 2006. While gross profit increased $400,000 as a result of higher volume, margin as a percentage of segment net sales remained consistent at 10.0% in the first quarter of 2007 compared to
10.1% in the first quarter of 2006.

Gross profit from Fabricated Products decreased to $58,000 (1.8% of segment net sales) in the first quarter of 2007
from $383,000 (9.7% of segment net sales) in the first quarter of 2006. Fabricated Products gross profit decreased for the three months ended March 31, 2007 over the same period last year primarily as a result of our inability to pass on higher
steel costs, due to the poor market for propane tanks.

Selling, General and Administrative Expenses.Selling, general and administrative
expenses increased to $7.3 million (8.0% of total net sales) in the first quarter of 2007 from $6.4 million (8.1% of total net sales) in the first quarter of 2006. The increase in the first quarter of 2007 from the same period last year was
primarily attributable to higher salaries and fringe benefits, increased incentive compensation and higher bad debt expense.

Interest Expense, net.Interest expense, net decreased to $1.6 million in the first quarter of 2007 from $1.8 million in the first quarter of 2006. The decrease in the three months ended March 31, 2007 over the same period last year resulted from the
collection of interest income from customers.

Income Taxes.The provision for income taxes was $2.7 million in the first three months of
2007, based on an expected tax rate of approximately 37.0%, compared to $1.7 in the first three months of 2006, based on an expected tax rate of approximately 38.5%. The decrease in our effective tax rate was mainly due to the utilization of
research and development tax credits and additional Section 199 manufacturing deductions.

Liquidity and Capital Resources

We finance operations with internally generated funds and available borrowings. At March 31, 2007, we had cash and cash equivalents of $180,000.

Net cash provided by operating activities in the first three months of 2007 was $1.7 million. This was primarily the result of our net income of $4.5 million, non-cash
adjustments for depreciation and amortization of property and equipment of $1.1 million, a decrease in costs and estimated earnings in excess of billings, inventories and refundable income taxes of $10.4 million, $4.3 million and $3.0 million,
respectively, offset in part by a decrease in accounts payable of $21.9 million. The decrease in costs and estimated earnings in excess of billings resulted from timing differences between production, shipment and invoicing of products. At the end
of 2006, we saw an increase in steel shipments from our vendors, which resulted in an increase in inventory and accounts payable at that time. During the first quarter of 2007, accounts payable decreased due to the payment for these steel receipts
and inventory decreased as steel was used in production.

Net cash used in investing activities in the first three months of 2007 was $4.3 million, which
resulted from additions of property and equipment. Capital expenditures are expected to be between $14.0 million and $16.0 million in 2007.

Net cash used
in financing activities in the first three months of 2007 was $1.5 million, which resulted primarily from net payments under the notes payable to financial institutions of $2.4 million, offset in part by proceeds from the sale of common stock upon
the exercise of options of $882,000.



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We had the following significant components of debt at March 31, 2007: a $65.0 million credit agreement, under which
$40.6 million was outstanding, against which $3.9 million in cash receipts had not yet been applied to the outstanding balance; $8.6 million of Series B Senior Notes; $5.0 million of Senior Notes; $15.0 million of Series A Term Note; $10.5
million of Series B Term Notes; $10.0 million of Series C Term Notes; $4.5 million of Series D Term Notes and a $4.0 million Industrial Revenue Bond.

The
credit agreement expires on May 20, 2010. The balance outstanding under the credit agreement bears interest at rates related to LIBOR plus 0.75% to 1.25%, or the lending institutions prime rate, minus 0.5% to 0.0%. At March 31, 2007,
we had $40.6 million outstanding under the credit facility bearing interest at a weighted average rate of 6.57%, partially offset by $3.9 million in cash receipts that had not been applied to the loan balance. At March 31, 2007 we had an
additional net borrowing capacity under the credit facility of $28.3 million.

The Series A Term Note in the principal amount of $15.0 million matures on
February 25, 2014 and requires annual payments in the amount of $2.1 million that begin February 25, 2008 plus interest of 8.75% paid quarterly on February 25, May 25, August 25 and November 25. The Series B
Term Notes in the principal amount of $10.5 million mature on June 21, 2014 and require annual payments in the amount of $1.5 million that begin June 21, 2008 plus interest of 8.47% paid quarterly on March 21, June 21,
September 21 and December 21. The Series C Term Notes in the principal amount of $10.0 million mature on October 26, 2014 and require annual payments of $1.4 million that begin October 26, 2008 plus interest of 7.36% paid
quarterly on January 26, April 26, July 26 and October 26. The Series D Term Notes in the principal amount of $4.5 million mature on January 24, 2015 and require annual payments in the amount of $643,000 that begin
January 24, 2009 plus interest of 7.32% paid quarterly on January 24, April 24, July 24, and October 24. The Series B Senior Notes in the principal amount of $8.6 million mature on April 1, 2008 and require annual
payments of $4.3 million that began April 1, 2002 plus interest at 6.91% paid quarterly on January 1, April 1, July 1 and October 1. The Senior Notes in the principal amount of $5.0 million mature on
November 15, 2007 and require annual payments in the amount of $5.0 million that began November 15, 2001 plus interest of 6.87% paid quarterly on February 15, May 15, August 15, and November 15. The Senior
Notes and Series B Senior Notes (together, the Notes) also include supplemental interest from 0.0% to 1.5% (0.0% at March 31, 2007), based on our total minimum net earnings before tax plus interest expense (net of capitalized
interest expense), depreciation expense and amortization expense (EBITDA) to total debt leverage ratio, which is paid with the required quarterly interest payments. The Industrial Revenue Bond in the principal amount of $4.0 million
matures on July 1, 2016 and requires monthly principal and interest payments, at 5.22%, in the amount of $50,000 that began February 1, 2007. The Notes, the Series A Term Note, the Series B Term Notes, the Series C Term Notes, and the
Series D Term Notes (together, the Term Notes) and the credit agreement are collateralized by accounts receivable, inventory and certain equipment.

We lease certain equipment used in the manufacturing process. The average interest rate on the capital leases is 5.7%.

We also have entered into
stand-by letters of credit that total approximately $7.4 million as of March 31, 2007. The stand-by letters of credit relate to customer owned material, workers compensation and general liability insurance. Due to the nature of these
arrangements and our historical experience, we do not expect to make any significant payments under these arrangements.

The credit agreement, the Notes,
the Term Notes and certain of our capital leases all require compliance with the following financial covenants: minimum consolidated tangible net worth, maximum consolidated total debt to consolidated EBITDA ratio, a minimum consolidated fixed
charge coverage ratio and a minimum asset coverage ratio. These and other covenants included in our financing agreements impose certain requirements with respect to our financial condition and results of operations, and place restrictions on, among
other things, our ability to incur certain additional indebtedness, to create liens or other encumbrances on assets and capital expenditures. A failure by us to comply with the requirements of these covenants, if not waived or cured, could permit
acceleration of the related indebtedness and acceleration of indebtedness under other instruments that include cross-acceleration or cross-default provisions. At March 31, 2007, we were not in violation of any of the covenants in our debt
agreements.

We expect to continue to rely on cash generated from operations and other sources of available funds to make required principal payments under
the Notes during 2007. We anticipate that our existing cash and cash equivalents, and amounts available under our credit agreement will be adequate to fund our working capital and capital requirements for at least the next twelve months. To the
extent necessary, we may also satisfy capital requirements through additional bank borrowings, senior notes, term notes and capital



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##### Table of Contents

and operating leases, if such resources are available on satisfactory terms. We have from time to time evaluated and continue to evaluate opportunities for
acquisitions and expansion. Any such transactions, if consummated, may use a portion of our working capital or necessitate additional bank borrowings.

Off Balance Sheet Arrangements

Other than operating lease commitments, we do not have off-balance sheet arrangements, financings, or other
relationships with unconsolidated entities or other persons, also known as special purpose entities.



|Item 3. | Quantitative and Qualitative Disclosure About Market Risk
|------- | ---------------------------------------------------------

We transact business in various foreign countries, and from time to time settle our transactions in foreign currencies. We have established a program that utilizes foreign currency forward contracts to offset the risk associated with the
effects of certain foreign currency exposures. These forward contracts are not used for trading or for speculative purposes. Our foreign currency exposures typically arise from sales contracts denominated in Canadian currency, for which there is
exposure associated with potential foreign currency rate changes occurring between the contract date and the date when the payments are received. Under this program, increases or decreases in our foreign currency exposures are offset by gains or
losses on the forward contracts, to mitigate the possibility of foreign currency transaction gains or losses. We have 11 Foreign Exchange Agreements (Agreements) at March 31, 2007, which were for an original amount of $37.1 million,
of which $25.1 million was still open. Net foreign exchange transaction gains (losses) included in the accompanying consolidated statements of operations were not material for the three months ended March 31, 2007 and 2006, respectively. We
believe our current risk exposure to exchange rate movements to be de minimis.

We are exposed to cash flow and fair value risk due to changes in interest
rates with respect to certain portions of our debt. The debt subject to changes in interest rates is our $65.0 million revolving credit line ($40.6 million outstanding as of March 31, 2007). We believe our current risk exposure resulting from
interest rate movements to be immaterial.

Additional information required by this item is set forth in Item 2Managements Discussion and
Analysis of Financial Condition and Results of OperationsLiquidity and Capital Resources.



|Item 4. | Controls and Procedures
|------- | -----------------------

As of March 31, 2007, the end
of the period covered by this report, our Chief Executive Officer and our Chief Financial Officer reviewed and evaluated the effectiveness of our disclosure controls and procedures (as defined in Exchange Act Rule 13a-15(e) and 15d-15(e)), which are
designed to ensure that material information we must disclose in our report filed or submitted under the Securities Exchange Act of 1934, as amended (the Exchange Act) is recorded, processed, summarized, and reported on a timely basis.
Based on that evaluation, our Chief Executive Officer and our Chief Financial Officer have concluded that as of such date, our disclosure controls and procedures were effective to ensure that information required to be disclosed by us in reports
that we file or submit under the Exchange Act is accumulated and communicated as appropriate to allow timely decisions regarding required disclosure.

In
light of the material weakness in internal control over financial reporting identified as existing as of December 31, 2006, which was described within the 2006 Annual Report on Form 10-K, during the quarter ended March 31, 2007 we
implemented additional controls and procedures to ensure the validity of certain capitalized costs for self-constructed assets,



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Part II  Other Information



|Item 1A. | Risk Factors
|-------- | ------------

There have been no material changes in the
risk factors previously disclosed in the Companys Annual Report on Form 10-K for the year ended December 31, 2006.



|Item 6. | Exhibits
|------- | --------

(a) The exhibits filed as part of this Report are
listed below:



|               |  |                                                                                                                       
|-------------- |  | ----------------------------------------------------------------------------------------------------------------------
|Exhibit Number |  | Description                                                                                                           
|               | 
|10.1           |  | Termination agreement with Terry Mitchell, Senior Vice President of Tubular Products                                  
|               | 
|31.1           |  | Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
|               | 
|31.2           |  | Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
|               | 
|32.1           |  | Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
|               | 
|32.2           |  | Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002



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Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Dated: May 4, 2007



NORTHWEST PIPE COMPANYBy:

/s/ BRIAN W. DUNHAMBrian W. DunhamPresident and Chief Executive OfficerBy:

/s/ JOHN D. MURAKAMIJohn D. MurakamiVice President, Chief Financial Officer(Principal Financial Officer)




16