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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
Chemical analysis methods of magnesium and magnesium alloys Determination of beryllium content Solochrome cyanine R spectrophotometric method
Standard published on 26.7.2005
Selected format:Chemical analysis methods of magnesium and magnesium alloys - Part 12Determination of copper content
Standard published on 27.11.2013
Selected format:Chemical analysis methods of magnesium and magnesium alloys Determination of lead content Flame atomic absorption spectrophotometric method
Standard published on 26.7.2005
Selected format:
Methods for chemical analysis of magnesium and magnesium alloys—Part 13Determination of lead, calcium, kalium and sodium content—Flame atomic absorption spectrometric method
Execute Date: december 2026
Standard published on 25.5.2026
Selected format:Chemical analysis methods of magnesium and magnesium alloys - Part 14Determination of nickel content - Dimethylglyoxime trophotometric method
Standard published on 27.11.2013
Selected format:Chemical analysis methods of magnesium and magnesium alloys - Part 15Determination of zinc content
Standard published on 27.11.2013
Selected format:
Methods for chemical analysis of magnesium and magnesium alloys—Part 15Determination of zinc content
Execute Date: december 2026
Standard published on 25.5.2026
Selected format:Chemical analysis methods of magnesium and magnesium alloys Determination of calcium content Flame atomic absorption spectrometric method
Standard published on 26.7.2005
Selected format: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
Selected format:Chemical analysis methods of magnesium and magnesium alloys Determination of chlorine content Silver chlorine turbidimetric method
Standard published on 26.7.2005
Selected format:Latest update: 2026-09-04 (Number of items: 2 300 131)
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