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Standards GB - Chinese national standards - Page 7512
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 3449-1994
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Measurement of noise inside railway vehicles
WITHDRAWN published on 19.7.1994
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GB 3449.1-1982
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Measurement of noise inside railway vehicles--Test code for measurement of noise inside drivercompartment of locomotives
WITHDRAWN published on 1.1.1982
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GB 3449.2-1985
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Measurement of noise inside railway vehicles--Measurement of noise inside coaches
WITHDRAWN published on 1.1.1985
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GB/T 34497-2017
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Copper and copper alloy strip and foil for terminals and connectors
WITHDRAWN published on 14.10.2017
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GB 345-1964
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WITHDRAWN published on 1.1.1964
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GB 3450-1982
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Standards for noise inside drivercompartment of locomotives
WITHDRAWN published on 1.1.1982
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GB/T 3450-1994
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Allowed value of noise inside driver""s compartment of locomotive
WITHDRAWN published on 12.8.1994
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GB/T 34504-2017
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Measurement method for surface metal contamination on sapphire polished substrate wafer
WITHDRAWN published on 14.10.2017
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GB/T 34506-2017
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Aluminum alloys extruded profiles,bars,rods and tubes from spray-formed billet
WITHDRAWN published on 14.10.2017
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GB 3452.1-1992
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Fluid systems—Sealing devices—O-rings—Inside diameters, cross-sections, tolerances and size identification code
WITHDRAWN published on 12.12.1992
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