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PHILIPP NES TRABAHQ 
NEG SYO 
KON SYUM °!!R 
MEMORANDUM CIRCULAR NO. ___ _ 
Series of 2022 
To : All Manu facturers and Importers of Steel Pipe Products Covered by 
DAO 19-16, Series of 2019 and Others Concerned 
SUBJECT Supplementa l Guidelines for the Implementation of DAO 19-16, 
Series of 2019 
WHEREAS, the Department Administrative Order (DAO) 19-16, Series of 2019 took effect on 
22 February 2020, the objective of which is to strictly ensure that steel pipe products comply 
with the specified safety and/or quality requirement/s as prescribed therein; 
WHEREAS, Philippine National Standard (PNS) 2145:2020 -Steel -Black and galvanized 
longitudinally welded lightweight steel tubes -Specification was promulgated in December 
2020 which specifies the classification and requirements for the materials, dimensions, color, 
methods of test, markings and bundling of black and pre-galvanized longitudinally welded 
lightweight steel tubes intended for steel frame structures; 
WHEREAS, Rule 25.9 of DAO 19-16:2019 provides that all steel pipes declared not within the 
scope of the DAO (e.g. fence tube, scaffolding tube, structural tube, etc.) shall be subject for 
inspection and verification by the BPS/DTI/RO/PO or BPS-recognized Inspection Body. 
Certificate of Exemption shall be issued by BPS once verification showed that the inspected 
products are not within the scope of the DAO; 
WHEREAS, the Philippine Association of Black Iron and Galvanized Iron Pipes and Tubes 
Manufacturers, Inc. requested the mandatory certification of black and galvanized longitudinally 
welded lightweight steel tubes due to influx of importation and to promote consumer safety; 
WHEREAS, pursuant to Rule 23 of DAO 19-16, Series of 2019, BPS may issue such 
procedural guidelines as may be necessary in the implementation of this Order; 
WHEREFORE, foregoing premises considered, this guideline is hereby issued to supplement 
the implementation of DAO 19-16, Series of 2019 for the guidance of all concerned: 
1.SCOPE
This Supplemental Guideline includes the mandatory certification of black and 
galvanized longitudinally welded lightweight steel tubes, whether locally manufactured 
or imported. All provisions of DAO 19-16, Series of 2019 shall apply, unless repealed 
by conditions set herein. 
2.SAMPLING PLAN
To determine the specific number of samples for black and galvanized longitudinally 
welded lightweight steel tubes, the table below shall apply: 
Supplemental Guidelines for the Implementation of DAO 19-16 Series of 2019 Page 1 of 6 For nominal size (ON) of 15mm to 40mm 
Acceptance Quality Limit 
Volume/Quantity Sample Sample (AQL) 
Size ACCEPT14 REJECT15 
No. of failed/defective samples 
Up to 75,000pcs 1st set 3 0 2 
2nd set 3 1 2 
75,001pcs-1st set 5 0 3 
150,000pcs 2nd Set 5 3 4 
150,001pcs- 1st set 8 0 3 
225,000pcs 2nd Set 8 4 5 
225,001 pcs - 1st set 13 2 5 
300,000pcs 2nd Set 13 6 7 
300,001 pcs and 1st set 20 3 6 
above 2nd Set 20 9 10 
For nominal size (ON) of 50mm to 100mm 
Acceptance Quality Limit 
Volume/Quantity Sample Sample (AQL) 
Size ACCEPT REJECT 
No. of failed/defective samples 
Up to 18,000pcs 1st set 3 0 2 2nd Set 3 1 2 
18,001pcs- 1st set 5 0 3 
36,000pcs 2nd Set 5 3 4 
36,001pcs- 1st set 8 0 3 
54,000pcs 2nd Set 8 4 5 
54,001pcs- 1st set 13 2 5 
72,000pcs 2nd set 13 6 7 
72,001 pcs and above 1st set 20 3 6 
2nd set 20 9 10 
2.1 The BPS, DTI ROs/POs, BPS-recognized auditing/inspection body shall 
facilitate the preparation of two (2) sets of black and hot dipped zinc-coated 
(galvanized) longitudinally welded steel pipes and black and galvanized 
longitudinally welded lightweight steel tubes per type, per class, per nominal 
size (DN) and per brand for every sample drawn properly labeled as first set 
and second set. 
2.1.1 First set 
One (1) mete r long sample shall be cut from each piece, packed/sealed and 
signed in the presence of authorized representatives from BPS, DTI ROs/POs 
or BPS-recognized auditing/inspection body. 
Sample Size Code Letters and Table 3-A -Double Sampling Plans for Normal Inspections of PNS 2859-1 :2012 
were used as reference. 
ACCEPT : If the number of failed samples is equal and less than the number indicated 
REJECT : If the number of failed samples is equal to or more than the number indicated 
Supplemental Guidelines for the Implementation of DAO 19-16 Series of 2019 Page 2 of 6 2.1.2 Second set 
Test samples drawn shall be packed/sealed and signed in the presence of 
authorized representatives from BPS, DTI ROs/POs or BPS-recognized 
auditing/inspection body and shall be kept by the manufacturer or importer. The 
preparation of cut samples shall only commence if the number of failed samples 
from the first set is more than the AQL prescribed acceptance number but less 
than the prescribed rejection number. 
3. PRODUCT TESTING
3.1. Product testing for black and galvanized longitudina lly welded lightweight steel 
tubes shall be conducted as follows: 
3.1.1. Dimensional Tests 
3.1.1.1 . Length 
3.1.1.2. Workmanship, Finish, and Appearance 
3.1.1.3. Dimension 
3.1.1.4. Mass per unit length 
3.1.2. Mass of Zinc Coating 
3.1.3. Bend Test (for tubes with nominal diameter of 50mm and below) 
3.1.4. Flattening Test (for tubes with nominal diameter above 50mm) 
3.2 To verify conformance to the aforementioned testing requirements, the test 
methods prescribed by the PNS 2145:2020 shall be used. Considering the 
regular updating of standards, the latest edition of the PNS shall be used as 
reference. It is understood that future amendments of the PNS used in this 
Circular shall be effective two (2) years after its promulgation to provide ample 
time to all stakeholders to adjust and conform to the new requirements, if any. 
4. MARKINGS
For traceability and verification purposes, the required markings for manufactured or 
imported black and galvanized longitudinally welded lightweight steel tubes shall be 
properly marked at all times by rolling, stamping, inkjet printing or stenciling for 
verification by the BPS and DTI RO's/PO's, their authorized representatives, and by the 
duly authorized enforcement teams either at the manufacturer's/importer's warehouse 
or trader's/distributors '/retailers' warehouse, if applicable: 
4.1 The required markings on the pipes for black and galvan ized longitudinally welded 
lightweight steel tubes shall be as follows: 
4.1.1 
4.1.2 
4.1.3 
4.1.4 
4.1.5 
4.1.6 
4.1.7 
4.1.8 
4.1.9 
4.1.10 Trademark or brand name 
The words "Structural Tube" or "Fence Tube" 
Nomin al Diameter, in mm 
Length, in m 
Compliant to minimum weight per 6-m length as per PNS 
The words "Product of the Philippines", if locally manufactured or 
Country of Origin, if imported 
The words "Not for Water Use" 
Color code (black color) shall be marked on both ends of the tube 
Lot / Batch Number; and 
PS Mark with License Number 
Note: Each pipe shall be marked with black paint on both ends of the tube. 
Supplemental Guidelines for the Implementation of DAO 19-16 Series of 2019 Page 3 of 6 4.2 Tags securely and properly attached to each bundle containing all the following 
information stamped or printed in a manner that is legible and not easily erasable: 
4.2.1 Trademark or brand name 
4.2.2 Manufacturer's or Importer's name and address in the Philippines 
4.2.3 No. of pieces 
4.2.4 PS Mark with License Number 
In the absence of any of the required markings or submission of incomplete markings, 
the application for PS License, SOC or Certificate of Exemption shall not be processed 
until such time that the required markings are submitted or corrected. 
5 SURETY BOND 
For imported black and hot dipped zinc-coated (galvanized) longitudinally welded steel 
pipes and black and galvanized longitudinally welded lightweight steel tubes, a Surety 
Bond amounting to One Hundred Fifty Thousand Pesos (Php 150,000.00) or five 
percent (5%) of the declared value/dutiable value in Philippine Peso, whichever is 
higher, shall be posted on a per shipment, per Bill of Lading/Airway Bill basis. 
6 REQUIRED CAPITALIZATION 
All importers of black and hot dipped zinc-coated (galvanized) longitudinally welded 
steel pipes and black and galvanized longitudinally welded lightweight steel tubes shall 
be required to have at least Fifty (50) Million Pesos (Php 50,000,000.00) capitalization 
prior to importation. Proof of the same shall be submitted to BPS upon filing the 
application for Statement of Confirmation (SOC) and Certificate of Exemption as 
follows: 
6.1 Duly filed Articles of Incorporation showing minimum paid-up capitalization for 
corporations, or business permit and proof showing minimum declared 
capitalization for single proprietorship; 
6.2 Copy of the lates t Audited Financial Statement; and 
6.3 Other documentary proof showing capitalization. 
7 TRANSITORY PROVISIONS 
7.1 All manufacturers with existing valid PS License shall comply with the procedures 
and requirements of this Circular on the subsequent surveillance audit. All pending 
PS applications received prior to the effectivity of this Circular shall be processed 
in accordance with DAO 04:2008 and after the issuance of the PS License, 
manufacturers shall comply with the procedures and requirements of this Circular 
on the subsequent surveillance audit. 
7.2 For existing foreign PS License holders with multiple importers, a list of existing 
importers shall be forwarded to BPS. The importers within the said list shall submit 
a copy of the authorization from the manufacturer upon applying for SOC. 
7.3 The authority to import for existing importers shall be valid until the expiration of 
the License unless sooner revoked or superseded. Upon recertification, the 
foreign PS License holder shall appoint a specific importer to continue using the 
Supplemental Guidelines for the Implementation of DAO 19-16 Series of 2019 Page 4 of6license number. For other and new/additional importers, new PS application shall 
be required. 
7.4 All PS License applications received after the effectiv ity of this Circular shall be 
subject to the procedures and requirements prescribed herein. 
7.5 All importations of black and galvanized longitudinall y welded lightweight steel 
tubes shall be subject for inspection and verification by BPS/DTI RO/PO or BPS­
recognized Inspection Body within twenty-four (24) months after the date of 
effectivity of this Circular. Certificate of Exemption and corresponding mark shall 
be issued by BPS upon satisfactory result of inspection and verification. 
7.6 All existing manufacturers , both local and foreign, of black and galvanized 
longitudinally welded lightweight steel tubes covered by this Circular shall apply 
and secure a PS License within twenty-four (24) months after the date of effectivity 
of this Circular. 
7.7 Twenty-four (24) months after the effectivity of this Circular, all local manufacturers 
of black and galvanized longitudinally welded lightweight steel tubes shall have a 
valid PS License. Likewise, all importations of black and galvanized longitudinally 
welded lightweight steel tubes shall be sourced from manufacturing plant/s with a 
valid PS License and shall comply with the SOC application requirements 
prescribed by DAO 19-16, Series of 2019 and this Circu lar. 
7.8 All uncertified black and galvanized longitudinally welded lightweight steel tubes 
that are already distributed or offered for sale in the local market or remaining 
inventories at the local manufacturer's plant or warehouse prior to the effectivity of 
this Circular shall apply for a certification from the BPS within thirty-six (36) months 
after the effectivity of this Circular. The application shall be supported by the 
following: 
7.8.1 Summary of Products being applied for Certificate of Exemption listed in 
accordance to the format provided in Annex A or B. 
7.8.2 Any documentary proof that the products are locally manufactured or 
imported prior to the effectivity of this Circular (e.g. Production Records, 
Import Entry, Bill of Lading, Notice of Arrival, etc.) 
Certificate of Exemption and corresponding mark shall be issued upon satisfactory 
result of evaluation. 
7.9 To ensure strict compliance, monitoring and enforcement shall be conducted 
thirty-six (36) months after the effectivity of this Circular. After this period, only 
black and galvanized longitudinally welded lightweight steel tubes bearing a valid 
PS Mark and other BPS-issued certification mark shall be sold, offered for sale or 
distributed in the local market. 
7.10 All non-com pliant products shall be subject to the following: 
7. 10 .1 First Offense -Notice of Violation shall be issued but
retailers/distributors shall only be advised to pull-out the items from the 
selling area. 
7.10.2 Second Offense onwards -Notice of Violation shall be issued subject to 
the regular adjudication process. 
Supplemental Guidelines for the Implementation of DAO 19-16 Series of 2019 Page 5 of 6 15th
June