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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
Major diameter welded steel pipe for lowpressure liquid service
WITHDRAWN published on 1.1.1994
Selected format:Dimenisions shape weight and tolerances for hot-rolled wire rods
WITHDRAWN published on 13.6.1994
Selected format:Dimensions,shape,mass and tolerances for hot-rolled wire rods
WITHDRAWN published on 9.6.2004
Selected format:Fireclay refractory mortars
WITHDRAWN published on 13.6.1994
Selected format:Test method for alkali-resistance of refractories
WITHDRAWN published on 13.6.1994
Selected format:Ferroalloys—Vocabulary
WITHDRAWN published on 13.6.1994
Selected format:-
WITHDRAWN published on 1.1.1994
Selected format:General rules of dimensionsshapesurface qualitytest method and inspection for expansion alloys
WITHDRAWN published on 4.4.1994
Selected format:Corrosion-resisting soft magnetic alloys technical requirements
WITHDRAWN published on 4.4.1994
Selected format:High saturation magnetic induction,magnetic compensate alloys depending on temperature variation,corrosion-resisting,iron-aluminium,Permanent permeability,soft magneticalloys
WITHDRAWN published on 13.5.2008
Selected format:Latest update: 2026-05-02 (Number of items: 2 275 366)
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