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Standards GB - Chinese national standards - Page 5937
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 13748.2-1992
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Magnesium and its alloys--Determination of manganese content--Periodate spectrophotometric method
WITHDRAWN published on 5.11.1992
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GB/T 13748.20-2009
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Chemical analysis methods of magnesium and magnesium alloys—Part 20:Determination of elements by inductively coupled plasma atomic emission spectrometry
WITHDRAWN published on 15.4.2009
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GB/T 13748.3-1992
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Magnesium and its alloys—Determination of zirconium content—Xylenol orange spectrophotometric method
WITHDRAWN published on 5.11.1992
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GB/T 13748.4-1992
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Magnesium and its alloys—Determination of cerium content—Tribromoarsenazo spectrophotometric method
WITHDRAWN published on 5.11.1992
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GB/T 13748.4-2005
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Chemical analysis methods of magnesium and magnesium alloys—Determination of manganese content—Periodate spectrophotometric method
WITHDRAWN published on 26.7.2005
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GB/T 13748.5-1992
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Magnesium and its alloys—Determination of iron content—Orthophenanthroline spectrophotometric method
WITHDRAWN published on 5.11.1992
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GB/T 13748.5-2005
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Chemical analysis methods of magnesium and magnesium alloys—Determination of yttrium content—Inductively coupled plasma atomic emission spectrometric method
WITHDRAWN published on 26.7.2005
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GB/T 13748.6-1992
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Magnesium and its alloys—Determination of silicon content—Molybdenum blue spectrophotometric method
WITHDRAWN published on 5.11.1992
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GB/T 13748.7-1992
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Magnesium and its alloys—Determination of beryllium content—Solochrome cyanine R spectrophotometric method
WITHDRAWN published on 5.11.1992
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GB/T 13748.7-2005
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Chemical analysis methods of magnesium and magnesium alloys—Determination of zirconium content—Xylenol orange spectrophotometric method
WITHDRAWN published on 26.7.2005
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