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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
Rubber, vulcanized—Test method of heat and oxygen—Tube tester ageing method
WITHDRAWN published on 12.12.1992
Selected format:Gangway hanger
WITHDRAWN published on 15.12.1987
Selected format:Diphenylmethane 4,4""-diisocyanate
WITHDRAWN published on 12.12.1992
Selected format:Method for laboratory test of natural decay resistance of woods
WITHDRAWN published on 17.12.1992
Selected format:Method for field test of natural durability of wood
WITHDRAWN published on 17.12.1992
Selected format:Blank detail specification for vacuum fluorescent display tubes
WITHDRAWN published on 17.12.1992
Selected format:Blank detail specification for glow discharge display tubes
WITHDRAWN published on 17.12.1992
Selected format:General specification for electronic components plastic packaging equipments
WITHDRAWN published on 17.12.1992
Selected format:Measuring methods for transmitters
WITHDRAWN published on 17.12.1992
Selected format:Application characteristics for 21-pin connector in video systems
WITHDRAWN published on 17.12.1992
Selected format:Latest update: 2026-04-14 (Number of items: 2 272 146)
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