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Standards GB - Chinese national standards - Page 5175
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 7631.4-1989
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Lubricants and related products (class L)--Classification--Part 4:Family F (Spindlebearingsbearings and associated clutches)
Standard published on 31.3.1989
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GB/T 7631.5-1989
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Lubricants and related products (class L)--Classification--Part 5:Family M (Metal working)
Standard published on 31.3.1989
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GB/T 7631.6-1989
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Lubricants and related products (class L)--Classification--Part 6:Family R (Temporary protection against corrosion)
Standard published on 31.3.1989
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GB/T 7631.7-1995
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Lubricants and related products (class L)--Classification--Part 7:Family C (Gears)
Standard published on 21.12.1995
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GB/T 7631.7-2025
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Lubricants, industrial oils and related products (class L) of classification—Part 7: Family C (gear systems)
Standard published on 5.10.2025
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GB/T 7631.8-1990
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Lubricants and related products (class L)--Classification--Part 8:Family X (Greases)
Standard published on 30.12.1990
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GB/T 7631.9-2014
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Lubricants,industrial oils and related products (class L)-ClassificationPart 9: Family D(Compressors)
Standard published on 19.2.2014
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GB/T 7632-1987
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Recommendations for the choice of lubricants for machine tools
Standard published on 3.4.1987
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GB/T 7633-2008
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Fire resistance tests - Door and shutter assemblies
Standard published on 8.10.2008
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GB/T 7635.1-2002
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National central product classification and code--Part 1:Transportable product
Standard published on 9.8.2002
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