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GB - Chinese national standards - Page 8797

Standards GB - Chinese national standards - Page 8797

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 6730.16-1986 19.8.1986
GB/T 6730.16-1986 WITHDRAWN

Methods for chemical analysis of iron ores The barium sulfate gravimetric method for the determination of sulfur content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.17-1986 19.8.1986
GB/T 6730.17-1986 WITHDRAWN

Methods for chemical analysis of iron ores The eombustion iodometric method for the determination of sulfur content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.18-1986 19.8.1986
GB/T 6730.18-1986 WITHDRAWN

Methods for chemical analysis of iron ores The n-butyl acetate extraction-molybdenum blue photometric method for the determination of phosphorus content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.19-1986 19.8.1986
GB/T 6730.19-1986 WITHDRAWN

Methods for chemical analysis of iron ores The bismuth phosphomolybdate blue photometric method for the determination of phosphorus content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.2-1986 19.8.1986
GB/T 6730.2-1986 WITHDRAWN

Methods for chemical analysis of iron ores Gravimetric method for the determination of moisture content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.20-1986 19.8.1986
GB/T 6730.20-1986 WITHDRAWN

Methods for the chemical analysis of iron ores The volumetric method for the determination of phosphorus content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.21-1986 19.8.1986
GB/T 6730.21-1986 WITHDRAWN

Methods for chemical analysis of iron ores The potassium periodate photometric method for the determination of manganese content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.22-1986 19.8.1986
GB/T 6730.22-1986 WITHDRAWN

Methods for chemical analysis of iron ores The diantipyrine methane photometric method for the determination of titanium content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.23-1986 19.8.1986
GB/T 6730.23-1986 WITHDRAWN

Methods for chemical analysis of iron ores The ferric ammonium sulfate volumetric method for the determination of titanium content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.23-2006 1.11.2006
GB/T 6730.23-2006 WITHDRAWN

Iron ores—Determination of titanium content—The ferric ammonium sulfate titrimetric method

WITHDRAWN published on 1.11.2006

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