G/TBT/N/TZA/957  
4 May 2023  
(23-3150) Page: 1/3 
Committee on Technical Barriers to Trade  Original:  English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  TANZANIA  
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:   
Tanzania Bureau of Standards (TBS)  
MOROGORO/Sam Nujoma Road, Ubungo  
P O BOX 9524, Dar es Salaam, Tanzania  
Tel: +255 222450206,  
E- mail: nep@tbs.go.tz  
Website: www.tbs.go.tz  
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 [  ], 3.2 [  ], 7.2 [  ], 
other :  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Structures 
and parts of structures, of iron or steel, n.e.s. (excl. bridges and bridge -sections, towers 
and lattice masts, doors and windows and their frames, thresholds for doors, props and 
similar equipment for scaffolding, shuttering, propping or pit -propping) (HS code(s): 
730890); Metal structures (ICS code(s): 91.080.10)  
5. Title, number of pages and language(s) of the notified document:  MEDC 02 (1901) 
DTZS, Steel towers for communication services — Specification, First Edition; (31 
page(s), in English)  
6. Description of content:  This standard specifies the technical requirements for the 
designing, fabrication, installation, inspection and maintenance operations for steel 
towers, masts and their accessories used in communication industry. It covers 
monopoles, roof mount/ rooftop, self -supporting towers and guyed masts.  
This standard ensures that the performance, reliability, public safety and safety of working 
personnel and equipment during installation, operation, inspection and maintenance. The 
requirements of the local operating environment are also taken into consideratio n by this 
standard alongside the need to achieve substantial conformity with applicable 
international best practices  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Consumer information, labelling; Quality requirement s; Reducing trade 
barriers and facilitating trade  G/TBT/N/TZA/957  
 
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  8. Relevant documents:   
FTZS 3457:2022, Code of practise for design and construction of foundations  
FTZS 3491 -1/ ISO 10721 -1, Steel structures - Part 1: Materials and design  
FTZS 3491 -2/ ISO 10721 -2, Stee l structures - Part 2: Fabrication and erection  
TZS 172/ISO 4014, Fasteners — Hexagon head bolts — Product grades A and B  
TZS 173/ISO 4016, Fasteners — Hexagon head bolts — Product grade C  
TZS 174/ISO 4032, Hexagon regular nuts (style 1) — Product grades A and B '  
TZS 175/ISO 4033, Hexagon high nuts (style 2) — Product grades A and B  
TZS 176/ISO 4034, Hexagon regular nuts (style 1) — Product grade C  
TZS 2893/ ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles — 
Specification s and test methods  
TZS 2630 -1/ ISO 9606 -1, Qualification testing of welders - Fusion welding - Part 1: Steels  
TZS 3082/ ISO 10684, Fasteners — Hot dip galvanized coatings  
ISO 377, Steel and steel products — Location and preparation of samples and test pieces 
for mechanical testing  
ISO 898 -1, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 
1: Bolts, screws and studs with specified property classes — Coarse thread and fine pitch 
thread  
ISO 898 -2, Mechanical properties of fas teners made of carbon steel and alloy steel — Part 
2: Nuts with specified property classes — Coarse thread and fine pitch thread ISO 898 -3, 
Mechanical properties of fasteners made of carbon steel and alloy steel — Part 3: Flat 
washers with specified proper ty classes  
ISO 2394, General principles on reliability for structures  
ISO 14713 -2, Zinc coatings — Guidelines and recommendations for the protection against 
corrosion of iron and steel in structures — Part 2: Hot dip galvanizing  
ISO 15350, Steel and iron — Determination of total carbon and sulfur content — Infrared 
absorption method after combustion in an induction furnace (routine method)  
ISO 17054, Routine method for analysis of high alloy steel by X -ray fluorescence 
spectrometry (XRF) by using a near -by technique  
ISO 19272, Low alloyed steel — Determination of C, Si, Mn, P, S, Cr, Ni, Al, Ti and Cu - 
Glow discharge optical emission spectrometry (routine method)  
ISO 10333 -4, Personal fall -arrest systems — Part 4: Vertical rails and vertical lifelines 
incorporating a sliding -type fall arrester  
ASTM A 143, Standard Practice for Safeguarding Against Embrittlement of Hot -Dip 
Galvanized Structural Steel Products and Procedure for Detecting Embrittlement  
ISO 17637, Non -destructive testing of welds — Visual testin g of fusion -welded joints  
ISO 17635, Non -destructive testing of welds — General rules for metallic materials  
EN 1993 -3-1, Design of steel structures – Part 3 -1: Towers, masts and chimneys – Towers 
and Masts  
EN 1993 -1-11, Design of steel structures - Part 1 -11: Design of structures with tension 
components  
ANSI/TIA -222-H, Structural Standard for Antenna Supporting Structures and Antennas 
and small wind turbine support structures  
BS EN 10025 -2, Hot rolled products of structural steels. Part 2: Technical delive ry 
conditions for non -alloy structural steels.  G/TBT/N/TZA/957  
 
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  9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  60 days from notification  
11. Texts available from:  National enquiry point [X] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
Contact person(s):  
Ms. Bahati Samillani (NEP officer) and Mr. Clavery Chausi  
Tanzania Bureau of Standards (TBS)  
Morogoro/Sam Nujoma Road, Ubungo  
P O Box 9524  
Dar Es Salaam  
Tel: +(255) 22 2450206  
Email: nep@tbs.go.tz ; bahati.samillani@tbs.go.tz  
Website: http://www.tbs.go.tz  
https://members.wto.org/crnattachments/2023/TBT/TZA/23_09454_00_e.pdf