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Standards GB - Chinese national standards - Page 7802
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 4507-1999
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Standard test method for softening point of bitumen (ring-and-ball apparatus)
WITHDRAWN published on 10.8.1999
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GB/T 4508-1999
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Standard test method for ductility of bitumen
WITHDRAWN published on 10.8.1999
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GB 4509-1984
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WITHDRAWN published on 1.1.1984
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GB/T 4509-1998
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Bitumen—Determination of penetration
WITHDRAWN published on 20.8.1998
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GB/T 451.1-1989
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Paper and board--Determination of size and deviation
WITHDRAWN published on 22.2.1989
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GB/T 451.2-1989
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Paper and board--Determination of basic weight
WITHDRAWN published on 22.2.1989
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GB/T 451.2-2002
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Paper and board—Determination of grammage
WITHDRAWN published on 13.6.2002
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GB/T 451.3-1989
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Paper and board--Determination of thickness
WITHDRAWN published on 22.2.1989
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GB/T 4510-1984
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Test method for determining the breaking point ofpetroleum bitumens
WITHDRAWN published on 17.6.1984
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GB/T 4510-2006
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Test method for determination of breaking point of bitumen—Fraass method
WITHDRAWN published on 23.1.2006
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