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Standards GB - Chinese national standards - Page 7884
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 4978-1985
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Standard blocks of Shore hardness
WITHDRAWN published on 1.1.1985
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GB 4979-1985
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Abrasive sheets
WITHDRAWN published on 1.1.1985
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GB/T 498-1987
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Petroleum products and lubricants—Method of classification—Definition of classes
WITHDRAWN published on 3.4.1987
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GB/T 4980-1985
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Determination of sound power level for noise emitted by displacement compressors--Engineering method
WITHDRAWN published on 5.3.1985
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GB/T 4980-2003
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Determination of sound level for noise emitted by displacement compressors
WITHDRAWN published on 29.10.2003
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GB 4981-1985
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Industrial valves--Pressure testing for valves
WITHDRAWN published on 1.1.1985
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GB/T 4982-1985
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Vacuum technology clamped type quick release flange
WITHDRAWN published on 6.3.1985
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GB/T 4983-1985
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Vacuum technology screwed type quick release flange
WITHDRAWN published on 6.3.1985
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GB/T 4984-1985
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Chemical analysis methods of zirconia-alumina refractories
WITHDRAWN published on 6.3.1985
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GB/T 4984-2007
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Chemical analysis of refractories containing zirconia
WITHDRAWN published on 18.4.2007
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