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Standards GB - Chinese national standards - Page 7611
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 4324.29-1984
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Methods for chemical analysis of tungsten--The gravimetric method for the determination of residue content after chloride volatility
WITHDRAWN published on 12.4.1984
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GB/T 4324.3-1984
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Methods forchemical analysis of tungsten--The polyethylene glycol octyl phenylether-phenylfluorone photometric method for the determination of tin content
WITHDRAWN published on 12.4.1984
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GB/T 4324.30-1984
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Methods for chemical analysis of tungsten--The gravimetric method for the determination of loss content on ignition
WITHDRAWN published on 12.4.1984
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GB/T 4324.4-1984
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Methods for chemical analysis of tungsten--The malachite green photometric method for the determination of antimony content
WITHDRAWN published on 12.4.1984
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GB/T 4324.5-1984
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Methods for chemical analysis of tungsten--The molybdenum blue photometric method for the determination of arsenic content
WITHDRAWN published on 12.4.1984
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GB/T 4324.5-2012
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Methods for chemical analysis of tungsten—Part 5:Determination of arsenic content—Hydrogenate atomic absorption spectrometry
WITHDRAWN published on 31.12.2012
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GB/T 4324.6-1984
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Methods for chemical analysisof tungsten--The ortho-phenanthroline photometric method for the determination iron content
WITHDRAWN published on 12.4.1984
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GB/T 4324.7-1984
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Methods for chemical analysis of tungsten--The 5-Cl-PADAB photometric method for the determination of cobalt content
WITHDRAWN published on 12.4.1984
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GB/T 4324.8-1984
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Methods for chemical analysis of tungsten--The dimethylglyoxime photometric method for the determination of nickel content
WITHDRAWN published on 12.4.1984
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GB/T 4324.9-1984
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Methods for chemical analysis of tungsten--The dimethylglyoxime gravimetric method for the determination of nickel content
WITHDRAWN published on 12.4.1984
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