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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
Rolling stock gauge for standard gauge railways
WITHDRAWN published on 7.11.1983
Selected format:Structure gauge for standard gauge railways
WITHDRAWN published on 7.11.1983
Selected format:-
WITHDRAWN published on 1.1.1978
Selected format:Gases for electronic industry—Nitrous oxide
WITHDRAWN published on 26.8.1993
Selected format:Gas for electronic industry - Nitrous oxide
WITHDRAWN published on 30.10.2009
Selected format:Gases for electronic industry—High purity ammonia
WITHDRAWN published on 26.8.1993
Selected format:Gas for electronic industry—Ammonia
WITHDRAWN published on 30.10.2009
Selected format:Gases for electronic industry—Hydrogen chloride
WITHDRAWN published on 26.8.1993
Selected format:Gases for electronic industry—Hydrogen chloride
WITHDRAWN published on 22.12.2014
Selected format:Gases for electronic industry—Boron trifluoride
WITHDRAWN published on 26.8.1993
Selected format:Latest update: 2026-06-09 (Number of items: 2 281 484)
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