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Standards GB - Chinese national standards - Page 7538
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 3996-1983
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Shaped thermal insulating products--Diatomite bricks and shapes
WITHDRAWN published on 12.12.1983
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GB 3997.1-1983
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WITHDRAWN published on 1.1.1983
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GB/T 3997.1-1998
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Shaped insulating refractory products—Determination of permanent Change in dimension on heating
WITHDRAWN published on 15.12.1998
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GB 3997.2-1983
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WITHDRAWN published on 1.1.1983
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GB/T 3997.2-1998
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Shaped insulating refractory products—Determination of cold crushing strength
WITHDRAWN published on 15.12.1998
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GB/T 3998-1983
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Crude anthracene
WITHDRAWN published on 12.12.1983
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GB 3999.1-1983
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Method for the determination of anthracene content of crude anthracene
WITHDRAWN published on 1.1.1983
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GB 3999.2-1983
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Method for the determination of oil content of crude anthracene
WITHDRAWN published on 1.1.1983
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GBJ 4-1973
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WITHDRAWN published on 1.1.1973
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GBW 4-1981
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WITHDRAWN published on 29.5.1981
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