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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
(The parts and units of jigs and fixtures. Cylinder head adjustment support)
WITHDRAWN published on 1.1.1991
Selected format:Determination of rare earth in tea by inductively coupled plasma mass spectrometry
WITHDRAWN published on 12.8.2008
Selected format:White tea
WITHDRAWN published on 12.8.2008
Selected format:Jasmine tea
WITHDRAWN published on 12.8.2008
Selected format:Determination of carbon content in ironsteel and alloy
WITHDRAWN published on 7.6.1981
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WITHDRAWN published on 1.1.1991
Selected format:Methods for chemical analysis of iron,steel and alloy The cupferron separation-chrome azurol S photometric method for the determination of aluminium content
WITHDRAWN published on 11.4.2000
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WITHDRAWN published on 1.1.1982
Selected format:Methods for chemical analysis of iron, steel and alloy The ammonium persulfate oxidation volumetric method for the determination of chromium content
WITHDRAWN published on 6.9.1991
Selected format:Chemical analysis of ironsteel and alloy--The determination of titanium by gravimetric method
WITHDRAWN published on 9.7.1982
Selected format:Latest update: 2026-01-20 (Number of items: 2 257 233)
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