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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Hot-rolled bulb flat steel
WITHDRAWN published on 17.12.2001
Selected format:Hot-rolled bulb flats
WITHDRAWN published on 5.11.2012
Selected format:Dimensions, shape, weight and tolerances for hot-rolled L-sectional steel
WITHDRAWN published on 20.9.1988
Selected format:Steel electricwelded tubes for the car cardan shafts
WITHDRAWN published on 1.1.1988
Selected format:Seamless steel tubes for petroleum cracking
WITHDRAWN published on 20.9.1988
Selected format:Seamless steel tubes for petroleum cracking
WITHDRAWN published on 16.8.2006
Selected format:Seamless steel tubes for petroleum cracking
WITHDRAWN published on 18.9.2013
Selected format:Contained P-Cu-Ti low alloy wear-resistant pig iron for foundry
WITHDRAWN published on 1.1.1988
Selected format:-
WITHDRAWN published on 1.1.1977
Selected format:Vertical belt tighteners for type TD belt conveyor--Specifications
WITHDRAWN published on 13.9.1977
Selected format:Latest update: 2026-01-18 (Number of items: 2 257 146)
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