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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
Calcium silicon
WITHDRAWN published on 1.1.1982
Selected format:-
WITHDRAWN published on 1.1.1982
Selected format:Dimension shape mass and tolerance for cold-drawn round square and hexagonal steel wires
WITHDRAWN published on 17.3.1997
Selected format:Gray iron castings for pipe fittings
WITHDRAWN published on 31.12.1982
Selected format:Cold rolled stainless steel plate,sheet and strip for construction roof and curtain
WITHDRAWN published on 7.9.2017
Selected format:Cast-iron pressure pipe centrifugally cast in sand-lined molds
WITHDRAWN published on 31.12.1982
Selected format:High purity alumina for sapphire substrate
WITHDRAWN published on 7.9.2017
Selected format:Cold-rolled non-oriented electrical steel strip(sheet) for electric vehicle driving motor
WITHDRAWN published on 7.9.2017
Selected format:Cast-iron pressure pipe made by continuous casting process
WITHDRAWN published on 31.12.1982
Selected format:Seamless steel tubes standard use diamond core drilling
WITHDRAWN published on 1.1.1982
Selected format:Latest update: 2026-01-22 (Number of items: 2 257 357)
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