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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
Ductile iron pipes and fittings—Cement mortar lining
WITHDRAWN published on 30.10.2009
Selected format:Ductile iron pipes—Centrifugal cement mortar lining—Composition controls of freshly applied mortar
WITHDRAWN published on 12.8.1998
Selected format:Ductile iron pipes—Bitumen coating
WITHDRAWN published on 12.8.1998
Selected format:Method of test for water content in paints by distillation
WITHDRAWN published on 15.9.1979
Selected format:Chemical conversion coatings—Rinsed and non-rinsed chromate conversion coatings on aluminium and aluminium alloys
WITHDRAWN published on 12.8.1998
Selected format:Connecting devices—Safety requirements for screw-type and screwless-type clamping units for electrical copper conductors
WITHDRAWN published on 17.8.1998
Selected format:Appliance couplers for household and similar general purposes Part 1:General requirements
WITHDRAWN published on 17.8.1998
Selected format:Appliances couplers for household and similar general purposes—Part 1:General requirements
WITHDRAWN published on 30.9.2009
Selected format:Appliance couplers for household and similar general purposes Part 2:Interconnection couplers for household and similar equipment
WITHDRAWN published on 17.8.1998
Selected format:Appliance couplers for household and similar general purposes—Part 2:Interconnection couplers for household and similar equipment
WITHDRAWN published on 30.9.2009
Selected format:Latest update: 2026-06-18 (Number of items: 2 283 376)
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