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Standards GB - Chinese national standards - Page 5869
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 13290-1991
WITHDRAWN
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Propylene and butadiene for industrial use—Sampling in the liquid phase
WITHDRAWN published on 9.12.1991
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GB 13291-1991
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Butadiene for industrial use—Specification
WITHDRAWN published on 9.12.1991
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GB/T 13291-2008
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Butadiene for industrial use—Specification
WITHDRAWN published on 19.6.2008
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GB/T 13292-1991
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Classification of coated hardmetal and main technical specifications for coating
WITHDRAWN published on 13.12.1991
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GB/T 13293.1-1991
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Higher purity copper cathode—Determination of selenium and tellurum contents—Catalytic oscillopolarographic method
WITHDRAWN published on 14.12.1991
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GB/T 13293.10-1991
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Higher purity copper cathode—Determination of zinc content—Flame atomic absorption spectrometric method
WITHDRAWN published on 14.12.1991
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GB/T 13293.11-1991
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Higher purity copper cathode—Determination of silicon content—Molybdenum blue spectrophotometric method
WITHDRAWN published on 14.12.1991
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GB/T 13293.12-1991
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Higher purity copper cathode—Determination of silver content—Separation and preconcentration with sulfhydryl cotton-flame atomic absorption spectrometric method
WITHDRAWN published on 14.12.1991
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GB/T 13293.13-1991
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Higher purity copper cathode—Determination of sulphur content—Combustion-potassium iodate titrimetric method
WITHDRAWN published on 14.12.1991
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GB/T 13293.2-1991
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Higher purity copper cathode—Determination of bismuth content—Hydride generation-atomic fluorescence spectrometric method
WITHDRAWN published on 14.12.1991
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