. /.  WORLD TRADE  
ORGANIZATION   
G/TBT/N/TTO/102 
18 August 2011  
 (11-4114) 
Committee on Technical Barriers to Trade Original:   English 
  
 
NOTIFICATION 
 
The following notification is being circ ulated in accordance with Article 10.6 
 
1. Notifying Member:  TRINIDAD AND TOBAGO  
If applicable, name of local governme nt involved (Article 3.2 and 7.2):     
2. Agency responsible:  Trinidad and Tobago Bureau of Standards 
Name and address (including telephone and fax numbers, email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above :    
3. Notified under Article 2.9.2 [ X ], 2.10.1 [   ], 5.6.2 [   ], 5.7.1 [   ], other:   
4. Products covered (HS or CCCN where applicable, otherwise national tariff heading. 
ICS numbers may be provided in addition, where applicable):  Steel sheets - Zinc and 
Aluminum-zinc alloy coated (ICS 77.140, 91.060.20) 
5. Title, number of pages and language(s) of the notified document:  TTS 69:20XX, Steel 
sheets - Zinc and Aluminum-zinc alloy coated  – Profiled for roofing and general purposes – 
Specification (32 pages, in English)  
6. Description of content:  This standard specifies minimum requirements for the base steel 
sheet as well as coating mass per area, coating adhesion, base metal thickness and mechanical performance. With respect to profiled steel shee ts that are cut into lengths, this standard 
specifies labelling requirements and includes tolerances for the length, pitch, depth, 
squareness and gives guidance on commonly used profiles.  
This standard applies to profiled steel sheets of base thicknesses ranging from 0.35 mm to 1.0 
mm which are hot dip coated with zinc or aluminium-zinc alloy.  
NOTE: Profiled steel sheets are cut to specified lengths for use in roofing and general purpose 
applications and may c ontain additional coatings such as paint.  
7. Objective and rationale, including the na ture of urgent problems where applicable:  
Compulsory status has been recommended to prevent fraud, deception, misleading, labelling, 
inferior products (toys) and to give adequate information to the consumer or user.  G/TBT/N/TTO/102 
Page 2  
 
  8. Relevant documents:    
ASTM International  
ASTM A924M, Standard Specification for General Require ments for Steel Sheet,  Metallic-
Coated by the Hot-Dip Process  
ASTM A370, Test methods and Definitions fo r Mechanical Testing of Steel Products 
International Organisation for Standardisation  
ISO 2859-1 , Sampling procedures for inspection by attributes, Part 1 Sampling schemes 
indexed by acceptance quality lim it (AQL) for lot-by-lot inspec tion quality characteristic and 
a single AQL  
9. Proposed date of adoption:   
Proposed date of entry into force:   On a date to be notified by the Minister to 
whom responsibility for trade and industry is assigned, in a Notice to be published in the Trinidad and Tobago Gaze tte as required by the 
Standards Act 
10. Final date for comments:  30/09/2011 
11. Text available from:  National enquiry point [X], or address, telephone and fax 
numbers, e-mail and web-site addres ses, if available of the other body:    
Trinidad and Tobago Bureau of Standards   
1-2 Century Drive, Trincity Indus trial Estate, Macoya, Tunapuna  
Trinidad and Tobago E-mail Address:  ttbs@ttbs.org.tt  
Website address:  www.ttbs.org