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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
Hot-rolled U-type steel for mine timbering
WITHDRAWN published on 13.12.1991
Selected format:Hot-rolled U-type steel for mine timbering
WITHDRAWN published on 5.8.2008
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WITHDRAWN published on 1.1.1984
Selected format:Sponge titanium, titanium and titanium alloys—Determination of copper content—Diethyldithiocarbamate spectrophotometric method
WITHDRAWN published on 4.11.1996
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WITHDRAWN published on 1.1.1984
Selected format:Sponge titanium, titanium and titanium alloys—Determination of chromium content in the presence of Vanadium—Ammonium ferrous sulfate titration method
WITHDRAWN published on 4.11.1996
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WITHDRAWN published on 1.1.1984
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WITHDRAWN published on 1.1.1984
Selected format:Sponge titanium, titanium and titanium alloys—Determination of vanadium content—Ammonium ferrous sulfate titration method
WITHDRAWN published on 4.11.1996
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WITHDRAWN published on 1.1.1984
Selected format:Latest update: 2025-12-17 (Number of items: 2 252 317)
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