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Standards GB - Chinese national standards - Page 756
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 17412.3-1998
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Classification and nomenclature schemes of the rocks--Classification and nomenclature schemes of metamorphic rocks
Standard published on 17.6.1998
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GB/T 17413.1-2010
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Methods for chemical analysis of lithiumrubidium and cesium ores - Part 1: Determination of lithium content
Standard published on 10.11.2010
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GB/T 17413.2-2010
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Methods for chemical analysis of lithiumrubidium and cesium ores - Part 2: Determination of rubidium content
Standard published on 10.11.2010
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GB/T 17413.3-2010
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Methods for chemical analysis of lithiumrubidium and cesium ores - Part 3: Determination of cesium content
Standard published on 10.11.2010
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GB/T 17414.1-2010
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Method for chemical analysis of Beryllium ores - Part 1Determination of Beryllium content - Eriochrome cyanine R photometric method
Standard published on 10.11.2010
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GB/T 17414.2-2010
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Method for chemical analysis of Beryllium ores - Part 2Determination of Beryllium content - Catalytic polarographic method
Standard published on 10.11.2010
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GB/T 17415.1-2010
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Methods for chemical analysis of tantalum and niobium ores - Part 1: Determination of tantalum content
Standard published on 10.11.2010
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GB/T 17415.2-2010
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Methods for chemical analysis of tantalum and niobium ores - Part 2: Determination of niobium content
Standard published on 10.11.2010
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GB/T 17416.1-2010
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Method for chemical analysis of Zirconium ores - Part 1: Determination of Zirconium- Hafnium oxide content
Standard published on 10.11.2010
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GB/T 17416.2-2010
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Method for chemical analysis of Zirconium ores - Part 2: Determination of Zirconium and Hafnium contents
Standard published on 10.11.2010
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