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Standards GB - Chinese national standards - Page 758
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 17420-2020
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Foliar microelement fertilizer
Standard published on 19.11.2020
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GB/T 17421.1-2023
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Test code for machine tools—Part 1Geometric accuracy of machines operating under no-load or quasi-static conditions
Standard published on 6.8.2023
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GB/T 17421.10-2021
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Test code for machine tools—Part 10: Determination of the measuring performance of probing systems of numerically controlled machine tools
Standard published on 9.3.2021
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GB/T 17421.2-2023
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Test code for machine tools—Part 2: Determination of accuracy and repeatability of positioning of numerically controlled axes
Standard published on 6.8.2023
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GB/T 17421.3-2009
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Test code for machine tools - Part 3: Determination of thermal effects
Standard published on 13.4.2009
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GB/T 17421.4-2016
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Test code for machine tools—Part 4: Circular tests for numerically controlled machine tools
Standard published on 25.4.2016
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GB/T 17421.5-2015
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Test code for machine tools—Part 5Determination of the noise emission
Standard published on 15.5.2015
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GB/T 17421.6-2016
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Test code for machine tools—Part 6: Determination of positioning accuracy on body and face diagonals(Diagonal displacement tests)
Standard published on 25.4.2016
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GB/T 17421.7-2016
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Test code for machine tools—Part 7: Geometric accuracy of axes of rotation
Standard published on 25.4.2016
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GB/T 17423-1998
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Series 1 freight containers--Interface connections for tank containers
Standard published on 5.7.1998
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