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GB - Chinese national standards - Page 8446

Standards GB - Chinese national standards - Page 8446

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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Preview GB/T 6150.17-1985 21.6.1985
GB/T 6150.17-1985 WITHDRAWN

Methods for chemical analysis of tungsten concentrates—The semi-xylenol orange photometric method for the determination of bismuth content

WITHDRAWN published on 21.6.1985

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Preview GB/T 6150.17-2008 17.6.2008
GB/T 6150.17-2008 WITHDRAWN

Methods for chemical analysis of tungsten concentrates—Determination of antimony content—Hydride reduction atomic absorption spectrometry

WITHDRAWN published on 17.6.2008

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Preview GB/T 6150.18-1985 21.6.1985
GB/T 6150.18-1985 WITHDRAWN

Methods for chemical analysis of tungsten concentrates—The sulphosalicylic acid photometric method for the determination of iron content

WITHDRAWN published on 21.6.1985

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Preview GB/T 6150.19-1985 21.6.1985
GB/T 6150.19-1985 WITHDRAWN

Methods for chemical analysis of tungsten concentrates—The 2-(5-bromo pyridylazo)-5-diethylaminophenol photometric method for the determination of antimony content

WITHDRAWN published on 21.6.1985

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Preview GB/T 6150.2-1985 21.6.1985
GB/T 6150.2-1985 WITHDRAWN

Methods for chemical analysis of tungsten concentrates—The potassium iodate volumetric method for the determination of tin content

WITHDRAWN published on 21.6.1985

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Preview GB/T 6150.2-2008 17.6.2008
GB/T 6150.2-2008 WITHDRAWN

Methods for chemical analysis of tungsten concentrates—Determination of tin content—The potassium iodate volumetry and hydrogenate atomic absorption spectrometry

WITHDRAWN published on 17.6.2008

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Preview GB/T 6150.3-1985 21.6.1985
GB/T 6150.3-1985 WITHDRAWN

Methods for chemical analysis of tungsten concentrates—The salicylfluorone-tetradecyl pyridine chloride photometric method for the determination of tin content

WITHDRAWN published on 21.6.1985

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Preview GB/T 6150.3-2009 30.10.2009
GB/T 6150.3-2009 WITHDRAWN

Methods for chemical analysis of tungsten concentrates—Determination of phosphorus content—The phosphorus molybdenum yellow spectrophotometry

WITHDRAWN published on 30.10.2009

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Preview GB/T 6150.4-1985 21.6.1985
GB/T 6150.4-1985 WITHDRAWN

Methods for chemical analysis of tungsten concentrates—The molybdenum yellow photometric method for the determination of phosphorus content

WITHDRAWN published on 21.6.1985

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Preview GB/T 6150.4-2008 31.3.2008
GB/T 6150.4-2008 WITHDRAWN

Methods for chemical analysis of tungsten concentrates—Determination of sulfur content—The high frequency-infrared absorption method

WITHDRAWN published on 31.3.2008

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