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Standards GB - Chinese national standards - Page 325
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 13747.1-2017
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Methods for chemical analysis of zirconium and zirconium alloys—Part 1Determination of tin content—Potassium iodate titration and phenylfluorone-polyethylene glycoloctyl phenyl ether spectrophotometry
Standard published on 29.9.2017
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GB/T 13747.10-2022
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Methods for chemical analysis of zirconium and zirconium alloys—Part 10Determination of tungsten content—Thiocyanate spectrophotometry and inductively coupled plasma atomic emission spectrometry
Standard published on 12.10.2022
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GB/T 13747.11-2017
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Methods for chemical analysis of zirconium and zirconium alloys—Part 11: Determination of molybdenum content—Thiocyanate spectrophotometry
Standard published on 29.9.2017
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GB/T 13747.12-2019
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Methods for chemical analysis of zirconium and zirconium alloys—Part 12Determination of silicon content—Molybdenum blue spectrophotometry
Standard published on 31.12.2019
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GB/T 13747.13-2017
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Methods for chemical analysis of zirconium and zirconium alloys—Part 13: Determination of lead content—Polarography
Standard published on 29.9.2017
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GB/T 13747.14-2017
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Methods for chemical analysis of zirconium and zirconium alloys—Part 14Determination of uranium content—Polarography
Standard published on 29.9.2017
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GB/T 13747.15-2017
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Methods for chemical analysis of zirconium and zirconium alloys—Part 15Determination of boron content—Curcumin spectrophotometry
Standard published on 29.9.2017
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GB/T 13747.16-2017
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Methods for chemical analysis of zirconium and zirconium alloys—Part 16Determination of chloric content—Silver chloride nephelometry and ion selective electrode method
Standard published on 29.9.2017
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GB/T 13747.17-2017
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Methods for chemical analysis of zirconium and zirconium alloys—Part 17Determination of cadmium content—Polarography
Standard published on 29.9.2017
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GB/T 13747.18-2022
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Methods for chemical analysis of zirconium and zirconium alloys—Part 18Determination of vanadium content—N-benzoyl-N-phenyl hydroxylamine spectrophotometry and inductively coupled plasma atomic emission spectrometry
Standard published on 12.10.2022
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