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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
Lengthened taper shank twist drills
WITHDRAWN published on 1.1.1985
Selected format:Information processing systems—Data communication—High-level data link control balanced classes of procedures—Data-link layer address resolution/negotiation in switched environments
WITHDRAWN published on 11.5.1993
Selected format:Test method of heat of combustion for building materials
WITHDRAWN published on 29.4.1993
Selected format:Test method of release heat by combustion for building materials
WITHDRAWN published on 29.4.1993
Selected format:Plate shear—Testing of the accuracy
WITHDRAWN published on 27.4.1993
Selected format:Plate shear—Testing of the accuracy
WITHDRAWN published on 16.6.2011
Selected format:General purpose overhead cranes
WITHDRAWN published on 20.4.1993
Selected format:General purpose gantry cranes
WITHDRAWN published on 20.4.1993
Selected format:Specification for cabins of overhead travelling cranes and portal bridge cranes for general purposes
WITHDRAWN published on 20.4.1993
Selected format:Low alloy steel castings for general engineering and structural purposes
WITHDRAWN published on 20.4.1993
Selected format:Latest update: 2026-04-10 (Number of items: 2 271 455)
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