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Standards GB - Chinese national standards - Page 7467
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 8653-1988
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Metallic materials—Determination of Young""s modulus, chord modulus, tangent modulus and Poisson""s ratio (statical method)
WITHDRAWN published on 5.2.1988
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GB/T 8654.1-1988
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Methods for chemical analysis of manganese metal The ortho-phenanthroline photometric method for the determination of iron content
WITHDRAWN published on 18.1.1988
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GB/T 8654.10-1988
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Methods for chemical analysis of manganese metal The infrared absorption method for the determination of sulfur content
WITHDRAWN published on 21.2.1988
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GB/T 8654.11-1988
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Methods for chemical analysis of manganese metal The combustion-neutralization titration method for the determination of sulfur content
WITHDRAWN published on 21.2.1988
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GB/T 8654.2-1988
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Methods for chemical analysis of manganese metal The titanium trichloride-potassium dichromate volumetric method for the determination of iron content
WITHDRAWN published on 18.1.1988
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GB/T 8654.3-1988
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Methods for chemical analysis of manganese metal The molybdenum blue photometric method for the determination of silicon content
WITHDRAWN published on 18.1.1988
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GB/T 8654.4-1988
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Methods for chemical analysis of manganese metal The perchloric acid dehydration gravimetric method for the determination of silicon content
WITHDRAWN published on 18.1.1988
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GB/T 8654.5-1988
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Methods for chemical analysis of manganese metal The molybdenum blue photometric method for the determination of phosphorus content
WITHDRAWN published on 18.1.1988
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GB/T 8654.7-1988
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Methods for chemical analysis of manganese metal The potentiometric titration method for the determination of manganese content
WITHDRAWN published on 18.1.1988
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GB/T 8654.8-1988
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Methods for chemical analysis of manganese metal The infrared absorption method for the determination of carbon content
WITHDRAWN published on 21.2.1988
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