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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
Viscous oil products of coal carbonization—Determination of density
WITHDRAWN published on 26.9.1994
Selected format:Quantitative analysis method of electron probe on glasses
WITHDRAWN published on 26.9.1994
Selected format:Quantitative analysis of glass by electron probe microanalysis
WITHDRAWN published on 11.11.2002
Selected format:Standard method for quantitative electorn probe microanalysis of ree oxides
WITHDRAWN published on 26.9.1994
Selected format:Quantitative analysis of rare earth element(REE)oxides by electron probe microanalysis(EPMA)
WITHDRAWN published on 11.11.2002
Selected format:Standard method for electron probe microanalysis of sulfide minerals
WITHDRAWN published on 26.9.1994
Selected format:Quantitative analysis of sulfide minerals by electron probe microanalysis
WITHDRAWN published on 11.11.2002
Selected format:Electron probe quantitative analysis method of carbon in carbon steel and low alloy steel—Sensitivity curve method (detection limit method)
WITHDRAWN published on 17.10.1994
Selected format:The test method for axial loading constant-amplitude low-cycle fatigue of metallic materials
WITHDRAWN published on 7.10.1994
Selected format:Crude Gold—Determination of gold content—Fire assay gravimetric method
WITHDRAWN published on 7.10.1994
Selected format:Latest update: 2026-03-30 (Number of items: 2 269 988)
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