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Standards GB - Chinese national standards - Page 7592
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 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WITHDRAWN published on 22.2.1989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WITHDRAWN published on 13.6.2002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WITHDRAWN published on 22.2.1989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WITHDRAWN published on 17.6.1984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WITHDRAWN published on 23.1.2006
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GB/T 4511.1-1984
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Coke—Determination of show porosity
WITHDRAWN published on 28.6.1984
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GB 4511.2-1984
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WITHDRAWN published on 1.1.1984
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GB/T 4511.3-1984
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Coke—Determination of apparent relative density and total porosity
WITHDRAWN published on 28.6.1984
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GB/T 4511.4-1984
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Coke—Determination of true relative density
WITHDRAWN published on 28.6.1984
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GB 4512-1984
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Skid bricks and lower blocks for the small heating furnaces--Determination of silicon carbide
WITHDRAWN published on 1.1.1984
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