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Standards GB - Chinese national standards - Page 7979
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 4698.7-1984
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WITHDRAWN published on 1.1.1984
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GB/T 4698.7-1996
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Sponge titanium, titanium and titanium alloys—Determination of nitrogen content—Distillation—Nessler reagent spectrophotometric method
WITHDRAWN published on 4.11.1996
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GB 4698.8-1984
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WITHDRAWN published on 1.1.1984
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GB/T 4698.8-1996
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Sponge titanium, titanium and titanium alloys—Determination of aluminum content—Separation with sodium hydroxide-EDTA complexometric titration method
WITHDRAWN published on 4.11.1996
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GB 4698.9-1984
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WITHDRAWN published on 1.1.1984
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GB/T 4698.9-1996
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Sponge titanium, titanium and titanium alloys—Determination of tin content—Potassium iodate titration method
WITHDRAWN published on 4.11.1996
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GB/T 4699.1-1984
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Methods for chemical analysis of silicochromium--The gravimetric method for the determination of silicon content
WITHDRAWN published on 28.9.1984
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GB/T 4699.2-1984
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Methods for chemical analysis of silicochromium--The alkaline fusion-ammonium persulfate oxidation volumetric method for the determination of chromium content
WITHDRAWN published on 4.10.1984
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GB/T 4699.2-2008
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Ferrochromium and ferrosilicochromium - Determination of chromium content - The ammonium persulfate oxidation titrimetric method and potentiometric titration method
WITHDRAWN published on 13.5.2008
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GB/T 4699.3-1984
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Methods for chemical analysisof silicochromium--The molybdenum blue photometric method for the determination of phosphorus content
WITHDRAWN published on 4.10.1984
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