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Standards GB - Chinese national standards - Page 7585
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 7958-2000
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Capacitor discharge type exploders for coal mines
WITHDRAWN published on 16.3.2000
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GB 7959-1987
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Sanitary standard for the non-hazardous treatment of night soil
WITHDRAWN published on 8.6.1987
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GB 796-1989
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Halon fire extinguishing systems—Performance requirements and method of test for nozzles
WITHDRAWN published on 22.2.1989
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GB/T 7962.1-1987
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Colorless optical glass test methods Refractive index and coefficient of dispersion
WITHDRAWN published on 25.5.1987
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GB/T 7962.10-1987
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Colorless optical glass test methods Radiation stability of radiation stable
WITHDRAWN published on 25.5.1987
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GB/T 7962.11-1987
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Colorless optical glass test methods Precise test method for refractive index
WITHDRAWN published on 25.5.1987
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GB/T 7962.12-1987
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Colorless optical glass test methods Spectral internal transmittance
WITHDRAWN published on 25.5.1987
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GB/T 7962.14-1987
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Colorless optical glass test methods Resistance to acid
WITHDRAWN published on 25.5.1987
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GB/T 7962.15-1987
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Colorless optical glass test methods Resistance to humidity
WITHDRAWN published on 25.5.1987
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GB/T 7962.16-1987
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Colorless optical glass test methods Linear thermal expansion coefficient and trasformation temperature
WITHDRAWN published on 25.5.1987
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