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Standards GB - Chinese national standards - Page 5129
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/T 6730.58-2017
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Iron oresDetermination of vanadium contentFlame atomic absorption spectrometric method
Standard published on 7.9.2017
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GB/T 6730.59-2017
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Iron oresDetermination of manganese contentFlame atomic absorption spectrometric method
Standard published on 7.9.2017
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GB/T 6730.6-2016
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Iron ores—Determination of metallic iron content—Ferric chloride-sodium acetate titrimetric method
Standard published on 13.10.2016
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GB/T 6730.60-2022
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Iron ores—Determination of nickel content—Flame atomic absorption spectrometric method
Standard published on 15.4.2022
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GB/T 6730.61-2022
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Iron ores—Determination of carbon and sulfur content—High frequency combustion with infrared absorption method
Standard published on 12.10.2022
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GB/T 6730.62-2005
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Iron ores-Determination of calcium,silicon,manganese,titanium,phosphorus magnesium,aluminium and barium content Wavelength dispersive X-ray fluorescence spectrometric method
Standard published on 21.7.2005
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GB/T 6730.63-2024
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Iron ores—Determination of aluminumcalciummagnesiummanganesephosphorussilicon and titanium content—Inductively coupled plasma atomic emission spectrometric method
Standard published on 28.5.2024
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GB/T 6730.64-2022
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Iron ores—Determination of water soluble chloride content—Ion-selective electrode method
Standard published on 12.10.2022
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GB/T 6730.65-2009
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Iron ores - Determination of total iron content - Titanium(III) chloride reduction potassium dichromate titration methodsroutine methods
Standard published on 30.10.2009
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GB/T 6730.66-2009
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Iron ores - Determination of total iron content - Automatic potentiometric titration method
Standard published on 30.10.2009
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