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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
Foundry coke
WITHDRAWN published on 22.2.1988
Selected format:Modified pitch
WITHDRAWN published on 1.1.1988
Selected format:Free-cutting steel—Technical requirements
WITHDRAWN published on 22.2.1988
Selected format:Steels for vane of steam turbine
WITHDRAWN published on 22.2.1988
Selected format:Steels of blade for steam turbine
WITHDRAWN published on 19.1.2004
Selected format:Aluminum alloy ingots for casting
WITHDRAWN published on 9.6.2000
Selected format:Aluminum alloy ingots for casting
WITHDRAWN published on 30.4.2007
Selected format:-
WITHDRAWN published on 1.1.1988
Selected format:Aluminium master alloy ingots
WITHDRAWN published on 1.1.1988
Selected format:Copper master alloy ingots
WITHDRAWN published on 1.1.1988
Selected format:Latest update: 2026-01-11 (Number of items: 2 254 176)
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