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Standards GB - Chinese national standards - Page 8793
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 671-1977
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WITHDRAWN published on 1.1.1977
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GB/T 6710-1986
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Method of the determination for the water insoluble matter content of sodium ferrocyanide
WITHDRAWN published on 13.8.1986
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GB/T 6711-1986
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Method of the determination for the aqueous content of sodium ferrocyanide
WITHDRAWN published on 13.8.1986
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GB 6712-1986
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Determination of silicon in graphite products of high purity by silicon-molybdenum blue photometric method
WITHDRAWN published on 1.1.1986
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GB 6713-1986
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Determination of iron in graphite products of high purity by ortho-phenanthroline photometric method
WITHDRAWN published on 1.1.1986
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GB 6714-1986
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Determination of trace boron in graphite products of high purity by spectroscopical method--The solution and dry residue method
WITHDRAWN published on 1.1.1986
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GB 6715-1986
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Determination of silicon and iron in graphite products of high purity by spectroscopical method--The powder method
WITHDRAWN published on 1.1.1986
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GB 6716-1986
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Method for electrolytical testing of cathode carbon bricks used in the aluminium electrolytical cell
WITHDRAWN published on 1.1.1986
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GB/T 6717-1986
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Method for determination of specific resistance of carbon materials
WITHDRAWN published on 13.8.1986
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GB 6718-1986
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WITHDRAWN published on 1.1.1986
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