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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
Pig iron—Sampling for chemical analysis
WITHDRAWN published on 24.3.1984
Selected format:-
WITHDRAWN published on 1.1.1987
Selected format:Glass fiber reinforced plastic cooling tower—Part 1:Middle and small glass fiber reinforced plastic cooling tower
WITHDRAWN published on 6.5.1997
Selected format:Glass fiber reinforced plastic cooling tower—Part 1:Middle and small glass fiber reinforced plastic cooling tower
WITHDRAWN published on 30.6.2008
Selected format:Glass fiber reinforced plastic cooling tower—Part 2:Large glass fiber reinforced plastic cooling tower
WITHDRAWN published on 6.5.1997
Selected format:Glass fiber reinforced plastic cooling tower—Part 2:Large glass fiber reinforced plastic cooling tower
WITHDRAWN published on 30.6.2008
Selected format:Glass fiber reinforced plastic bathtubs
WITHDRAWN published on 1.1.1987
Selected format:Test method for resin content of prepreg
WITHDRAWN published on 1.1.1987
Selected format:Unsaturated polyester resin—Determination of viscosity
WITHDRAWN published on 16.1.1987
Selected format:Unsaturated polyester resin—Determination of hydroxyl value
WITHDRAWN published on 16.1.1987
Selected format:Latest update: 2026-04-05 (Number of items: 2 271 011)
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