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Standards GB - Chinese national standards - Page 8102
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 4757-1984
WITHDRAWN
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Methods for the froth flotation testing of coal
WITHDRAWN published on 1.1.1984
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GB/T 4757-2001
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Methods for the batch flotation testing of fine coal
WITHDRAWN published on 12.11.2001
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GB/T 4757-2013
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Methods for the batch flotation testing of fine coal
WITHDRAWN published on 17.12.2013
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GB 4758.1-1984
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Fireclay and high alumina plastic refractories
WITHDRAWN published on 1.1.1984
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GB 4758.2-1984
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Method for sample preparation of fireclay and high alumina plastic refractories
WITHDRAWN published on 1.1.1984
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GB 4758.3-1984
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Test method for linear change of fireclay and high alumina plastic refractories
WITHDRAWN published on 1.1.1984
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GB 4758.4-1984
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Test method for strength of fireclay and high alumina plastic refractories
WITHDRAWN published on 1.1.1984
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GB 4758.5-1984
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Test method for workability index of fireclay and high alumina plastic refractories
WITHDRAWN published on 1.1.1984
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GB 4758.6-1984
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Test method for moisture content of fireclay and high alumina plastic refractories
WITHDRAWN published on 1.1.1984
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GB 4759-1984
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Measurement procedure for exhaust silencers of internal combustion engines
WITHDRAWN published on 1.1.1984
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