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Standards GB - Chinese national standards - Page 5936
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 13747.7-1992
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Zirconium and zirconium alloys—Determination of manganese content—Patassium periodate spectrophotometric method
WITHDRAWN published on 5.11.1992
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GB/T 13747.8-1992
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Zirconium and zirconium alloys—Determination of cobalt content-1-nitroso-2-hydroxy-3,6-naphthalene-disulfonic acid (sodium salt) spectrophotometric method
WITHDRAWN published on 5.11.1992
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GB/T 13747.9-1992
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Zirconium and zirconium alloys—Determination of magesium content—Flame absorption spectrometric method
WITHDRAWN published on 5.11.1992
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GB/T 13748.1-1992
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Magnesium and its alloys—Determination of aluminium content
WITHDRAWN published on 5.11.1992
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GB/T 13748.1-2005
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Chemical analysis methods of magnesium and magnesium alloys—Determination of aluminum content
WITHDRAWN published on 26.7.2005
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GB/T 13748.10-1992
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Magnesium and its alloys—Determination of zinc content—Flame atomic absorption spectrometric method
WITHDRAWN published on 5.11.1992
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GB/T 13748.10-2005
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Chemical analysis methods of magnesium and magnesium alloys—Determination of silicon content—Molybdenum blue spectrophotometric method
WITHDRAWN published on 26.7.2005
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GB/T 13748.12-2005
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Chemical analysis methods of magnesium and magnesium alloys—Determination of low copper content—2,9-Dimethyl-1,10-phenanthroline spectrophotometric method
WITHDRAWN published on 26.7.2005
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GB/T 13748.14-2005
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Chemical analysis methods of magnesium and magnesium alloys—Determination of nickel content—Dimethylglyoxime trophotometric method
WITHDRAWN published on 26.7.2005
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GB/T 13748.15-2005
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Chemical analysis methods of magnesium and magnesium alloys—Determination of zinc content
WITHDRAWN published on 26.7.2005
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