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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
Vitrified clay pipes and fittings for drainage
WITHDRAWN published on 1.1.1984
Selected format:Vitrified clay pipes and fittings for chemical industry
WITHDRAWN published on 1.1.1984
Selected format:Reciprocating internal combustion engines--Hand operated control devices--Standard direction of motion
WITHDRAWN published on 13.9.1984
Selected format:Reciprocating internal combustion engines--Definition of right-hand and left-hand single bank engines
WITHDRAWN published on 1.1.1984
Selected format:Safety code for grinding machines
WITHDRAWN published on 28.7.1984
Selected format:Weld ability testing Method of Y-groove cracking test
WITHDRAWN published on 28.7.1984
Selected format:Weld ability testing Method of controlled thermal severity cracking test
WITHDRAWN published on 28.7.1984
Selected format:Weld ability testing Method of cracking test for welded tee joint
WITHDRAWN published on 28.7.1984
Selected format:Weld ability testing Method of FISCO cracking test
WITHDRAWN published on 28.7.1984
Selected format:Weld ability testing method of maximum hardness in weld heat-affected zone
WITHDRAWN published on 28.7.1984
Selected format:Latest update: 2025-10-14 (Number of items: 2 236 946)
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