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Standards GB - Chinese national standards - Page 7798
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 4486-1984
WITHDRAWN
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Determination methods of bound acrylonitrile content in acrylonitrile-butadiene rubber
WITHDRAWN published on 1.1.1984
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GB 4487-1984
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Determination methods of antioxidant D content in acrylonitrile-butadiene rubber
WITHDRAWN published on 1.1.1984
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GB 4488-1984
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Determination methods of swelling ratio for acrylonitrile-butadiene rubber
WITHDRAWN published on 1.1.1984
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GB/T 4489-1984
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Flat transmission belts widths and lengths
WITHDRAWN published on 17.6.1984
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GB/T 4489-2002
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Flat transmission belts—Dimensions and tolerances
WITHDRAWN published on 16.10.2002
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GB 449-1984
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Sawn timber volume table
WITHDRAWN published on 22.12.1984
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GB 4490-1984
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Conveyor belts--Dimensions
WITHDRAWN published on 1.1.1984
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GB/T 4490-1994
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Conveyor belts—Dimensions
WITHDRAWN published on 22.12.1994
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GB/T 4490-2009
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Conveyor belts with textile carcass—Widths and lengths
WITHDRAWN published on 24.4.2009
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GB 4491-1993
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Rubber transfusion tubes
WITHDRAWN published on 30.12.1993
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