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GB - Chinese national standards - Page 8640

Standards GB - Chinese national standards - Page 8640

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 7730.5-2000 17.11.2000
GB/T 7730.5-2000 WITHDRAWN

Methods for chemical analysis of ferromanganese and blast furnace ferromanganese The infrared absorption method for the determination of carbon content

WITHDRAWN published on 17.11.2000

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Preview GB/T 7730.6-1988 21.2.1988
GB/T 7730.6-1988 WITHDRAWN

Methods for chemical analysis of ferromanganese and blast furnace ferromanganese The gasometric method for the determination of carbon content

WITHDRAWN published on 21.2.1988

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Preview GB/T 7730.7-1988 21.2.1988
GB/T 7730.7-1988 WITHDRAWN

Methods for chemical analysis of ferromanganese and blast furnace ferromanganese—The gravimetric method for the determination of carbon content

WITHDRAWN published on 21.2.1988

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Preview GB/T 7730.8-1988 1.1.1988
GB/T 7730.8-1988 WITHDRAWN

Methods for chemical analysis of ferromanganese and blast furnace ferromanganese--The infrared absorption method for determination of sulfur content

WITHDRAWN published on 1.1.1988

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Preview GB/T 7730.8-2000 17.11.2000
GB/T 7730.8-2000 WITHDRAWN

Methods for chemical analysis of ferromanganese and blast furnace ferromanganese-The infrared absorption method for the determination of sulfur content

WITHDRAWN published on 17.11.2000

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Preview GB/T 7730.9-1988 21.2.1988
GB/T 7730.9-1988 WITHDRAWN

Methods for chemical analysis of ferromanganese and blast furnace ferromanganese The combustion-neutralization titration method for the determination of sulfur content

WITHDRAWN published on 21.2.1988

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Preview GB/T 7731.1-1987 12.5.1987
GB/T 7731.1-1987 WITHDRAWN

Methods for chemical analysis of ferrotungsten--The cinchonine gravimetric method for the determination of tungsten content

WITHDRAWN published on 12.5.1987

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Preview GB/T 7731.10-1988 21.2.1988
GB/T 7731.10-1988 WITHDRAWN

Methods for chemical analysis of ferrotungsten—The infrared absorption method for the determination of carbon content

WITHDRAWN published on 21.2.1988

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Preview GB/T 7731.11-1988 1.1.1988
GB/T 7731.11-1988 WITHDRAWN

Methods for chemical analysis of ferrotungsten--The coulometric method for the determination of carbon content

WITHDRAWN published on 1.1.1988

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Preview GB/T 7731.12-1988 21.2.1988
GB/T 7731.12-1988 WITHDRAWN

Methods for chemical analysis of ferrotungsten—The infrared absorption method for the determination of sulfur content

WITHDRAWN published on 21.2.1988

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