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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
Caustic burned magnesia
WITHDRAWN published on 1.1.1988
Selected format:Calcined flint clay
WITHDRAWN published on 1.1.1988
Selected format:Magnesites
WITHDRAWN published on 1.1.1988
Selected format:Permeameter
WITHDRAWN published on 1.1.1988
Selected format:Permeameter
WITHDRAWN published on 15.6.1988
Selected format:Strain-controlled unconfined compression apparatus
WITHDRAWN published on 1.1.1988
Selected format:Strain-controlled unconfined compression apparatus
WITHDRAWN published on 15.6.1988
Selected format:Basic conditions and methods of enviromental test for hydrologic instruments
WITHDRAWN published on 12.11.2001
Selected format:General specification for hydrologic instruments--General
WITHDRAWN published on 15.6.1988
Selected format:General specification for hydrologic instruments--Referential operating condition
WITHDRAWN published on 15.6.1988
Selected format:Latest update: 2025-12-26 (Number of items: 2 253 153)
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