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Standards GB - Chinese national standards - Page 5870
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 13293.3-1991
WITHDRAWN
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Higher purity copper cathode—Determination of chromium, manganese and cadmium contents—Zeeman effect electrothermal atomic absorption spectrometric method
WITHDRAWN published on 14.12.1991
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GB/T 13293.4-1991
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Higher purity copper cathode—Determination of antimony content-2-[(-5-bromo-2-pyridyl)azo]-5-diethylaminophenol spectrophotometric method
WITHDRAWN published on 14.12.1991
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GB/T 13293.5-1991
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Higher purity copper cathode—Determination of arsenic content—Heteropoly arsenomolybdic acid-crystal violet spectrophotometric method
WITHDRAWN published on 14.12.1991
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GB/T 13293.6-1991
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Higher purity copper cathode—Determination of phosphorus content—Heteropoly phosphato-vanadato-molybdicacid-crystal violet spectrophotometric method
WITHDRAWN published on 14.12.1991
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GB/T 13293.7-1991
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Higher purity copper cathode—Determination of iron, cobalt and lead contents—Zeeman effect electrothermal atomic absorption spectrometric method
WITHDRAWN published on 14.12.1991
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GB/T 13293.8-1991
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Higher purity copper cathode—Determination of nickel content—Zeeman effect electrothermal atomic absorption spectrometric method
WITHDRAWN published on 14.12.1991
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GB/T 13293.9-1991
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Higher purity copper cathode—Determination of tin content—Zeeman effect electrothermal atomic absorption spectrometric method
WITHDRAWN published on 14.12.1991
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GB/T 13294-1991
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Higher purity copper cathode. Determiantion of tin content. Zeeman effect electrothermal atomic absorption spectrometric method
WITHDRAWN published on 1.1.1991
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GB/T 13295-1991
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(Centrifugal casting ductile iron pipe)
WITHDRAWN published on 1.1.1991
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GB/T 13295-2003
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Ductile iron pipes,fittings and accessories for water or gas applications
WITHDRAWN published on 3.3.2003
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