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Standards GB - Chinese national standards - Page 8782
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/T 9144-2003
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General purpose metric screw threads--Preferable plan
WITHDRAWN published on 22.5.2003
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GB/T 9145-1988
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General purpose screw threads--Limits of sizes for commercial bolt and nut threads--Medium quality
WITHDRAWN published on 25.4.1988
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GB/T 9146-1988
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General purpose screw threads--Limits of sizes for commercial bolt and nut threads--Coarse quality
WITHDRAWN published on 25.4.1988
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GB 9147-1988
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Hollow flank worm gear units
WITHDRAWN published on 1.1.1988
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GB 9148-1988
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Hindley-worm reduction units
WITHDRAWN published on 1.1.1988
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GB/T 9149-1988
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General specification for magnetic particle clutch
WITHDRAWN published on 6.5.1988
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GB 915-1984
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Bismuth ingot
WITHDRAWN published on 1.1.1984
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GB/T 915-1995
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Bismuth
WITHDRAWN published on 17.10.1995
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GB 9150-1988
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WITHDRAWN published on 1.1.1988
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GB/T 9151-1988
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Terms of drilling engineering
WITHDRAWN published on 20.7.1988
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