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Standards GB - Chinese national standards - Page 7576
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 3780.11-1983
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Carbon black--Determination of sieve residue
WITHDRAWN published on 1.1.1983
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GB/T 3780.11-1995
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Carbon black—Determination of sieve residue
WITHDRAWN published on 20.12.1995
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GB 3780.12-1983
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Carbon black--Inspection of impurity material
WITHDRAWN published on 1.1.1983
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GB/T 3780.12-1995
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Carbon black—Inspection of impurity material
WITHDRAWN published on 20.12.1995
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GB/T 3780.13-1983
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Carbon black (pelletized)--Determination of pour density
WITHDRAWN published on 14.6.1983
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GB 3780.14-1983
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Carbon black--Determination of sulphur content (combustion furnace method)
WITHDRAWN published on 1.1.1983
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GB/T 3780.14-1995
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Carbon black—Determination of sulphur content
WITHDRAWN published on 20.12.1995
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GB/T 3780.14-2010
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Carbon black—Part 14:Determination of sulfur content
WITHDRAWN published on 9.8.2010
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GB 3780.15-1988
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WITHDRAWN published on 1.1.1988
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GB/T 3780.15-1997
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Carbon black for use in the rubber industry—Determination of light transmittance of toluene extract—Rapid method
WITHDRAWN published on 26.9.1997
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