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Standards GB - Chinese national standards - Page 5774
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
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GB 12836-1991
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Tubeless valves--Part 1: Snap-in valves
WITHDRAWN published on 1.1.1991
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GB 12836.1-1999
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Tubeless valves—Part 1:Snap-in valves
WITHDRAWN published on 29.6.1999
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GB 12836.2-2003
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Tubeless valves—Part 2:Clamp-in valves
WITHDRAWN published on 13.6.2003
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GB 12837-1999
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Tyre valves for large core chamber
WITHDRAWN published on 29.6.1999
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GB 12838-1999
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Tyre valve cores for large core chamber
WITHDRAWN published on 29.6.1999
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GB/T 12839-1991
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WITHDRAWN published on 1.1.1991
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GB/T 12839-1997
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Tyre valves—Terms and definitions
WITHDRAWN published on 14.10.1997
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GB/T 12839-2005
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Tyre valves—Terms and definitions
WITHDRAWN published on 15.9.2005
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GB/T 12839-2012
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Terms and definitions of tyre valves
WITHDRAWN published on 31.12.2012
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GB 1284-1977
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WITHDRAWN published on 1.1.1977
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