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Standards GB - Chinese national standards - Page 4899
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 5121.29-2015
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Methods for chemical analysis of copper and copper alloys—Part 29: Determination of aluminium oxide content
Standard published on 11.9.2015
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GB/T 5121.3-2008
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Methods for chemical analysis of copper and copper alloys - Part 3:Determination of lead content
Standard published on 17.6.2008
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GB/T 5121.4-2008
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Methods for chemical analysis of copper and copper alloys - Part 4:Determination of carbon and sulfur content
Standard published on 17.6.2008
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GB/T 5121.5-2008
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Methods for chemical analysis of copper and copper alloys - Part 5:Determination of nickel content
Standard published on 17.6.2008
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GB/T 5121.6-2008
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Methods for chemical analysis of copper and copper alloys - Part 6:Determination of bismuth content
Standard published on 17.6.2008
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GB/T 5121.7-2008
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Methods for chemical analysis of copper and copper alloys - Part 7:Determination of arsenic content
Standard published on 17.6.2008
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GB/T 5121.8-2024
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Methods for chemical analysis of copper and copper alloys—Part 8 : Determination of oxygen, nitrogen and hydrogen contents
Standard published on 25.4.2024
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GB/T 5121.9-2008
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Methods for chemical analysis of copper and copper alloys - Part 9:Determination of iron content
Standard published on 17.6.2008
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GB 51210-2016
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Unified standard for safety of scaffold in construction
Standard published on 1.1.2016
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GB/T 51211-2016
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Technical code for wireless local area network broadband engineering of urban rail transit
Standard published on 1.1.2016
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