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GB - Chinese national standards - Page 7769

Standards GB - Chinese national standards - Page 7769

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 3447.1-1982 1.1.1982
GB 3447.1-1982 WITHDRAWN

The analytical rule for ascharite ores

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Preview GB 3447.2-1982 1.1.1982
GB 3447.2-1982 WITHDRAWN

Methods for the sampling and sample preparation of ascharite ores

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Preview GB 3447.3-1982 1.1.1982
GB 3447.3-1982 WITHDRAWN

Analytical method for boric anhydride contents in ascharite ores

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Preview GB 3447.4-1982 1.1.1982
GB 3447.4-1982 WITHDRAWN

Analytical method for total iron contents in ascharite ores

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Preview GB 3447.5-1982 1.1.1982
GB 3447.5-1982 WITHDRAWN

Analytical method for ferrous oxide contents in ascharite ores

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Preview GB 3447.6-1982 1.1.1982
GB 3447.6-1982 WITHDRAWN

Analytical methods for calcium and magnesium oxides contents in ascharite ores

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Preview GB 3447.7-1982 1.1.1982
GB 3447.7-1982 WITHDRAWN

Analytical method for insoluble matter contents in ascharite ores

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Preview GB 3447.8-1982 1.1.1982
GB 3447.8-1982 WITHDRAWN

Analytical method for loss on ignition in ascharite ores

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Preview GB/T 34474.1-2017 14.10.2017
GB/T 34474.1-2017 WITHDRAWN

Determination of banded structure of steel—Part1Micrographic method using standards diagrams

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Preview GB/T 34474.2-2018 14.5.2018
GB/T 34474.2-2018 WITHDRAWN

Determination of banded structure of steel—Part 2: Quantitative method

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