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Standards GB - Chinese national standards - Page 7559
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 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WITHDRAWN published on 14.10.2017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WITHDRAWN published on 14.10.2017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WITHDRAWN published on 12.12.1992
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GB/T 3452.2-1987
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Appearance quality acceptance criteria for rubber O-rings
WITHDRAWN published on 7.3.1987
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GB/T 3452.3-1988
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Fluid power systems--O-ring--Design criteria for O-ring housing--Basic calculation
WITHDRAWN published on 18.4.1988
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GB 3453-1982
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Basic mode control procedures for data communications
WITHDRAWN published on 1.1.1982
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GB/T 34533-2017
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Measurement of helium porosity and pulse decay permeability of shale
WITHDRAWN published on 14.10.2017
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GB/T 3454-1982
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List of definitions for interchange circuits between data terminal equipment and data-circuit-terminating equipment
WITHDRAWN published on 31.12.1982
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GB/T 34549-2017
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Sanitary ware—Smart toilet
WITHDRAWN published on 14.10.2017
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GB/T 3456-1982
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Anvils and high pressure cylinders made from cemented carbide
WITHDRAWN published on 31.12.1982
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