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Standards GB - Chinese national standards - Page 8373
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 6150.8-1985
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Methods for chemical analysis of tungsten concentrates—The gravimetric method for the determination hygroscopic moisture content
WITHDRAWN published on 21.6.1985
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GB/T 6150.8-2009
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Methods for chemical analysis of tungsten concentrates—Determination of molybdenum content—The thiocyanate spectrophotometry
WITHDRAWN published on 30.10.2009
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GB/T 6150.9-1985
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Methods for chemical analysis of tungsten concentrates—The chlorosulphophenol S photometric method for the determination niobium content; The butylrhodamine B extraction photometric method for the determination tantalum content
WITHDRAWN published on 21.6.1985
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GB 6151-1985
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WITHDRAWN published on 1.1.1985
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GB/T 6151-1997
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Textiles—Tests for colour fastness—General principle of testing
WITHDRAWN published on 9.6.1997
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GB 6152-1985
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WITHDRAWN published on 1.1.1985
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GB 6153-1985
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Self-roasting carbon bricks for calcium carbide furnace
WITHDRAWN published on 1.1.1985
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GB 6154-1985
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WITHDRAWN published on 1.1.1985
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GB/T 6154-1985
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Carbon materials--Determination of the bulk density
WITHDRAWN published on 21.6.1985
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GB/T 6155-1985
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Carbon materials--Determination of the true density
WITHDRAWN published on 21.6.1985
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