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Standards GB - Chinese national standards - Page 8797
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 9253.7-1988
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WITHDRAWN published on 1.1.1988
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GB/T 9253.8-1995
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Drill pipe threads
WITHDRAWN published on 22.5.1995
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GB/T 9253.9-1995
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Drill pipe thread gauges
WITHDRAWN published on 15.5.1995
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GB 9254-1998
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Information technology equipment—Radio disturbance characteristics—Limits and methods of measurement
WITHDRAWN published on 14.12.1998
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GB/T 9254-2008
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Information technology equipment—Radio disturbance characteristics—Limits and methods of measurement
WITHDRAWN published on 6.8.2008
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GB 9255-1988
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Chemical analysis methods of boron carbide
WITHDRAWN published on 1.1.1988
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GB 9256-1988
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Chemical analysis methods of cubic boron nitride
WITHDRAWN published on 1.1.1988
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GB 9257-1988
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Chemical analysis methods of black fused alumina
WITHDRAWN published on 1.1.1988
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GB 9258-1988
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WITHDRAWN published on 1.1.1988
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GB/T 9258.2-2000
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Coated abrasives—Grain size analysis—Part 2:Determination of grain size distribution of macrogrits P12 to P220
WITHDRAWN published on 18.2.2000
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