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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
Test method for flammability of plastics—Flash-ignition temperature and self-ignition temperature test
WITHDRAWN published on 13.5.1988
Selected format:Plastics—Determination of ash—General methods
WITHDRAWN published on 13.5.1988
Selected format:Determination of number of impurities and foreign particles of polyvinyl chloride resins
WITHDRAWN published on 13.5.1988
Selected format:Determination of the thermal stability of homopolymer and copolymer resins of cinyl chloride and their compounds--Discoloration method
WITHDRAWN published on 14.6.1988
Selected format:Limit value of allowable continuous heat exposure time in hot environment
WITHDRAWN published on 22.3.1989
Selected format:Homopolymer and copolymer resims of vinyl chloride--Determination of pH of aqueous extract
WITHDRAWN published on 14.6.1988
Selected format:Plastics—Compression moulding test specimens of thermoplastic materials
WITHDRAWN published on 14.6.1988
Selected format:Determination of residual styrene monomer in Acrylonitrile-Butadiene-Styrene(ABS) resin by gas chromatography
WITHDRAWN published on 14.6.1988
Selected format:Permeameter
WITHDRAWN published on 15.6.1988
Selected format:Strain-controlled unconfined compression apparatus
WITHDRAWN published on 15.6.1988
Selected format:Latest update: 2025-02-06 (Number of items: 2 224 275)
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