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Standards GB - Chinese national standards - Page 7639
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 4701.5-1984
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Methods for chemical analysisof ferrotitanium--The periodate photometric method for the determination ofmanganese content
WITHDRAWN published on 4.10.1984
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GB/T 4701.6-1984
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Methods for chemical analysis of ferrotitanium--The 8-hydroxylquinoline volumetric method for the determination of aluminium content
WITHDRAWN published on 4.10.1984
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GB/T 4701.7-1985
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Methods for chemical analysis of ferrotitanium—The molybdenum blue spectrophotometric method for the determination of phosphorus content
WITHDRAWN published on 15.4.1985
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GB/T 4701.8-1988
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Methods for chemical analysis of ferrotitanium—The infrared absorption method for the determination of carbon content
WITHDRAWN published on 21.2.1988
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GB/T 4701.9-1988
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Methods for chemical analysis of ferrotitanium--The coulometric method for the determination of carbon content
WITHDRAWN published on 1.1.1988
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GB 4702.1-1984
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WITHDRAWN published on 1.1.1984
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GB/T 4702.1-1997
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Methods for chemical analysis of chromium metal—The ammonium ferrous sulfate volumetric method for the determination of chromium content
WITHDRAWN published on 11.11.1997
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GB/T 4702.12-1987
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Methods for chemical analysis of chromium metal--The oscilloplarographic method for the determination of bismuth content
WITHDRAWN published on 12.5.1987
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GB/T 4702.13-1987
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Methods for chemical analysis of chromium metal--The oscilloplarographic method for the determination of lead content
WITHDRAWN published on 12.5.1987
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GB/T 4702.15-1988
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Methods for chemical analysis of chromium metal--The coulometric method for the determination of carbon content
WITHDRAWN published on 1.1.1988
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