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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
Limits and measurement methods for exhaust smoke from C.I.E.(Compression Ignition Engine) and vehicle equipped with C.I.E.
WITHDRAWN published on 30.5.2005
Selected format:Recycling materials for brass
WITHDRAWN published on 31.12.2019
Selected format:Recycling materials for copper
WITHDRAWN published on 31.12.2019
Selected format:Recycling materials for cast aluminium alloys
WITHDRAWN published on 31.12.2019
Selected format:Recycling materials for cast aluminium alloys
WITHDRAWN published on 31.12.2019
Selected format:Hardmetals—determination of (the magnetization) coercivity
WITHDRAWN published on 14.9.1983
Selected format:Hardmetals—Rockwell hardness (scale A) test method
WITHDRAWN published on 14.9.1983
Selected format:-
WITHDRAWN published on 1.1.1977
Selected format:Impermeable sintered metal materials and hardmetals—determination of density
WITHDRAWN published on 14.9.1983
Selected format:Hardmetals—determination of transverse rupture strength
WITHDRAWN published on 14.9.1983
Selected format:Latest update: 2025-11-14 (Number of items: 2 243 651)
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