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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
Pressure piping code—Power piping
WITHDRAWN published on 10.12.2015
Selected format:Assembly tools for screws and nuts—Machine-operated square drive sockets (impact)—Dimensions
WITHDRAWN published on 17.10.2000
Selected format:Assembly tools for screws and nuts-machine-operated square drive sockets (“impact”)—Dimensions
WITHDRAWN published on 13.4.2009
Selected format:Test method for warp of silicon wafers—Automated non-contact scanning method
WITHDRAWN published on 10.12.2015
Selected format:Hot-rolled steel H piles
WITHDRAWN published on 10.12.2015
Selected format:Electrical steel core for power transformers
WITHDRAWN published on 10.12.2015
Selected format:Assembly tools for bolts and screws—Hexagon drive ends for machine-operated screwdriver bits
WITHDRAWN published on 17.10.2000
Selected format:Assembly tools for screws and nuts—Drive ends for hand and machine-operated screwdriver bits and connecting parts—Dimensions,torque testing
WITHDRAWN published on 9.7.2008
Selected format:Diagnosis of occupational benzene poisoning
WITHDRAWN published on 16.6.1997
Selected format:Assessment and control methods of spacecraft magnetic property
WITHDRAWN published on 31.12.2015
Selected format:Latest update: 2026-01-26 (Number of items: 2 257 479)
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