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Standards GB - Chinese national standards - Page 6119
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 14846-2008
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Aluminium and aluminium alloy extruded profiles—Tolerances on dimensions and form
WITHDRAWN published on 31.3.2008
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GB/T 14847-1993
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Test method for thickness of lightly doped silicon epitaxial layers on heavily doped silicon substrates by infrared reflectance
WITHDRAWN published on 24.12.1993
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GB/T 14848-1993
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Quality standard for ground water
WITHDRAWN published on 30.12.1993
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GB/T 14849.1-1993
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Silicon metal—Determination of iron content—1,10-Phenanthroline spectrophotometric method
WITHDRAWN published on 24.12.1993
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GB/T 14849.1-2007
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Methods for chemical analysis of silicon metal—Part 1:Determination of iron content—1,10-Phenanthrolion spectrophotometric method
WITHDRAWN published on 25.10.2007
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GB/T 14849.2-1993
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Silicon metal—Determination of aluminum content—Chrome azurol S spectrophotometric method
WITHDRAWN published on 24.12.1993
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GB/T 14849.3-1993
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Silicon metal—Determination of calcium content
WITHDRAWN published on 24.12.1993
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GB/T 14849.3-2007
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Methods for chemical analysis of silicon metal—Part 3:Determination of calcium content
WITHDRAWN published on 25.10.2007
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GB/T 14849.4-2008
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Methods for chemical analysis of silicon metal—Part 4:Determination of elements content Inductively coupled plasma atomic emission spectrometric method
WITHDRAWN published on 9.6.2008
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GB/T 14849.5-2010
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Chemical analysis of slion metal—Part 5:Determination of elements content—Analysis using an X-ray fluorescence method
WITHDRAWN published on 14.1.2011
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