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Standards GB - Chinese national standards - Page 330

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 13748.23-2024

Methods for chemical analysis of magnesium and magnesium alloys—Part 23: Determination of elements content—Wavelength dispersive X-ray fluorescence spectrometric method

Standard published on 26.10.2024

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GB/T 13748.24-2025

Methods for chemical analysis of magnesium and magnesium alloysPart 24: Determination of trace impurity elements contentsGlow discharge mass spectrometry

Standard published on 24.1.2025

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GB/T 13748.3-2005

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

Standard published on 26.7.2005

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GB/T 13748.3-2026

Methods for chemical analysis of magnesium and magnesium alloys—Part 3Determination of lithium,silver content—Flame atomic absorption spectrometry method
Execute Date: december 2026

Standard published on 25.5.2026

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GB/T 13748.4-2013

Chemical analysis methods of magnesium and magnesium alloys - Part 4Determination of manganese content - Periodate spectrophotometric method

Standard published on 6.9.2013

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GB/T 13748.4-2026

Methods for chemical analysis of magnesium and magnesium alloys—Part 4Determination of manganese and zirconium content—Spectrophotometric method
Execute Date: december 2026

Standard published on 25.5.2026

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GB/T 13748.6-2005

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

Standard published on 26.7.2005

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