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Standards GB - Chinese national standards - Page 8417
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 6408-2003
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Super abrasive—Cubic boron nitride
WITHDRAWN published on 8.10.2003
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GB 6409.1-1986
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Abrasive products--Diamond or cubic boron nitride grinding wheels and sticks--Shape types, designation
WITHDRAWN published on 1.1.1986
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GB/T 6409.1-1994
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Superhard abrasive products and saws—-General survey designation
WITHDRAWN published on 20.12.1994
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GB 6409.2-1986
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Diamond or cubic boron nitride grinding wheels
WITHDRAWN published on 1.1.1986
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GB/T 6409.2-1996
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Abrasive products—Diamond or cubic boron nitride grinding tools—Form and dimensions
WITHDRAWN published on 5.7.1996
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GB/T 6409.2-2009
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Superabrasives—Diamond or cubic boron nitride grinding tools—Shapes and dimensions
WITHDRAWN published on 23.4.2009
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GB/T 6409.3-1986
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Diamond or cubic boron nitride--Hand sticks
WITHDRAWN published on 20.5.1986
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GB/T 6409.4-1986
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Marking and packing for diamond or cubic boron nitride abrasive products
WITHDRAWN published on 20.5.1986
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GB 641-1978
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WITHDRAWN published on 1.1.1978
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GB/T 641-1994
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Chemical reagent—Potassium peroxydisulfate
WITHDRAWN published on 11.3.1994
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