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Standards GB - Chinese national standards - Page 4737
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 4702.18-2020
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Chromiun metal—Determination of vanadium content—Tantalum reagent trichloromethane extraction spectrophtometry method
Standard published on 6.3.2020
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GB/T 4702.2-2025
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Chromium metal—Determination of silicon content—Perchloric acid gravimetric method and molybdenum blue spectrophotometric method
Standard published on 31.10.2025
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GB/T 4702.3-2016
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Chromiun metal—The determination of phosphorus content—Bismuth phosphate molybdenum blue spectrophotometric method
Standard published on 29.8.2016
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GB/T 4702.4-2008
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Chromium metal - Determination of iron content - EDTA titrimetric method and flame atomic absorption spectrometric method
Standard published on 13.5.2008
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GB/T 4702.5-2008
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Chromium metal - Determination of aluminium content - EDTA titrimetric method and flame atomic absorption spectrometric method
Standard published on 13.5.2008
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GB/T 4702.6-2016
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Chromium metal—Determination of iron, aluminium, silicon and copper content—Inductively coupled plasma atomic emission spectrometry method
Standard published on 13.12.2016
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GB/T 4702.7-2016
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Chromium metalDetermination of nitrogen contentDistillation-nessler reagent spectrophotometric method
Standard published on 29.8.2016
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GB/T 4702.8-1985
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Methods for chemical analysis of chromium metal--The distillation-molybdenum blue spectrophotometricmethod for the determination of arsenic content
Standard published on 15.4.1985
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GB/T 4702.9-1985
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Methods for chemical analysis of chromium metal--The crystal violet spectrophotometric method for the determination of antimony content
Standard published on 15.4.1985
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GB/T 47020-2026
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Cybersecurity technology—Data format of software bill of materials
Standard published on 28.1.2026
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