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GB - Chinese national standards - Page 320

Standards GB - Chinese national standards - Page 320

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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Preview GB/T 13748.14-2013 27.11.2013
GB/T 13748.14-2013

Chemical analysis methods of magnesium and magnesium alloys - Part 14Determination of nickel content - Dimethylglyoxime trophotometric method

Standard published on 27.11.2013

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Preview GB/T 13748.15-2013 27.11.2013
GB/T 13748.15-2013

Chemical analysis methods of magnesium and magnesium alloys - Part 15Determination of zinc content

Standard published on 27.11.2013

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Preview GB/T 13748.15-2026 25.5.2026
GB/T 13748.15-2026

Methods for chemical analysis of magnesium and magnesium alloys—Part 15Determination of zinc content
Execute Date: december 2026

Standard published on 25.5.2026

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Preview GB/T 13748.16-2005 26.7.2005
GB/T 13748.16-2005

Chemical analysis methods of magnesium and magnesium alloys Determination of calcium content Flame atomic absorption spectrometric method

Standard published on 26.7.2005

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Preview GB/T 13748.17-2005 26.7.2005
GB/T 13748.17-2005

Chemical analysis methods of magnesium and magnesium alloys Determination of kalium content and natrium content Flame atomic absorption spectrophotometric method

Standard published on 26.7.2005

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Preview GB/T 13748.18-2005 26.7.2005
GB/T 13748.18-2005

Chemical analysis methods of magnesium and magnesium alloys Determination of chlorine content Silver chlorine turbidimetric method

Standard published on 26.7.2005

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Preview GB/T 13748.18-2026 25.5.2026
GB/T 13748.18-2026

Methods for chemical analysis of magnesium and magnesium alloys—Part 18Determination of chlorine content—Silver chloride turbidimetric method
Execute Date: december 2026

Standard published on 25.5.2026

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Preview GB/T 13748.19-2005 26.7.2005
GB/T 13748.19-2005

Chemical analysis methods of magnesium and magnesium alloys Determination of titanium content Diantipyrylmethane spectrophotometric method

Standard published on 26.7.2005

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Preview GB/T 13748.2-2005 26.7.2005
GB/T 13748.2-2005

Chemical analysis methods of magnesium and magnesium alloys Determination of tin content Pyrocatechol violet spectrophotometric method

Standard published on 26.7.2005

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Preview GB/T 13748.2-2026 25.5.2026
GB/T 13748.2-2026

Methods for chemical analysis of magnesium and magnesium alloys—Part 2Determination of tin,beryllium,copper,nickel and titanium content—Spectrophotometric method
Execute Date: december 2026

Standard published on 25.5.2026

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