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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
Mouldboard ploughs for paddy field--Test methods
WITHDRAWN published on 1.1.1983
Selected format:Methods for determination of diffusible hydrogen in deposited metal of covered electrodes
WITHDRAWN published on 1.1.1983
Selected format:Methods for determination of diffusible hydrogen in deposited metal
WITHDRAWN published on 12.7.1995
Selected format:Jewel bearings with through hole for instruments and meters
WITHDRAWN published on 1.1.1983
Selected format:Jewel bearings with end stones for instruments and meters
WITHDRAWN published on 1.1.1983
Selected format:Jewel bearings with recess for instruments and meters
WITHDRAWN published on 1.1.1983
Selected format:Porcelain bushing shell for transformer up to 35kV
WITHDRAWN published on 9.12.1983
Selected format:-
WITHDRAWN published on 1.1.1965
Selected format:Technical condition of coal for metallurgical coke
WITHDRAWN published on 8.12.1998
Selected format:Specification of coal for coke making
WITHDRAWN published on 1.6.2009
Selected format:Latest update: 2025-11-12 (Number of items: 2 243 625)
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