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Standards GB - Chinese national standards - Page 7500
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 3258.2-1982
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Chemical analysis of bismuth concentrates--The EDTA volumetric method for determination of lead
WITHDRAWN published on 1.1.1982
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GB 3258.3-1982
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Chemical analysis of bismuth concentrate The molybdenum blue photometric method for determination of silicon dioxide
WITHDRAWN published on 1.1.1982
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GB 3258.4-1982
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Chemical analysis of bismuth concentrates--The thiocyanate photometric method for determination of tungsten trioxide
WITHDRAWN published on 1.1.1982
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GB 3258.5-1982
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Chemical analysis of bismuth concentrates--The thiocyanate photometric method for determination of molybdenum
WITHDRAWN published on 1.1.1982
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GB 3258.6-1982
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Chemical analysis of bismuth concentrates--The EDTA volumetric method for determination of iron
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GB 3258.7-1982
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Chemical analysis of bismuth concentrates--The barium sulfate gravimetric method for determination of sulfur
WITHDRAWN published on 1.1.1982
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GB 3258.8-1982
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Chemical analysis of bismuth concentrate The iodometric method for determination of arsenic
WITHDRAWN published on 1.1.1982
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GB 3258.9-1982
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Chemical analysis of bismuth concentrates--The thiosulfate-iodide method for determination of copper
WITHDRAWN published on 1.1.1982
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GB/T 32590.1-2016
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Railway applications—Urban guided transport management and command/control systems—Part 1:System principles and fundamental concepts
WITHDRAWN published on 25.4.2016
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GB/T 32592-2016
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Railway applications—Current collection systems—Requirements for and validation of measurements of the dynamic interaction between pantograph and overhead contact line
WITHDRAWN published on 25.4.2016
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