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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
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WITHDRAWN published on 1.1.1982
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WITHDRAWN published on 4.2.1985
Selected format:Metallic materials—Tube—Flattening test
WITHDRAWN published on 11.11.1997
Selected format:Metal materials—Tube—Flattening test
WITHDRAWN published on 18.7.2007
Selected format:Troilite and sulphur concentrates--Analysis--Sampling of test specimens and method of preparation
WITHDRAWN published on 1.1.1981
Selected format:Building hardware for windows—Tilt and turn hardware system
WITHDRAWN published on 15.11.2009
Selected format:Boosting pressure water supply equipment for rectangular tank
WITHDRAWN published on 15.11.2009
Selected format:Rolling bearings—Angular contact thrust ball bearings used for machine tool screws
WITHDRAWN published on 15.11.2009
Selected format:Rolling bearings—Non-destructive testing—Magnetic particle testing
WITHDRAWN published on 15.11.2009
Selected format:Rolling bearings—Test and assessment for life and reliability
WITHDRAWN published on 15.11.2009
Selected format:Latest update: 2026-04-02 (Number of items: 2 270 295)
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