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Standards GB - Chinese national standards - Page 498
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 15242.1-2017
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Dimensions series of rod and piston dynamic seals for hydraulic cylinders—Part 1Dimensions and tolerances of co-axial seals for reciprocating applications
Standard published on 1.11.2017
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GB/T 15242.2-2017
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Dimensions series of rod and piston dynamic seals for hydraulic cylinders—Part 2Dimensions and tolerances of bearing rings
Standard published on 1.11.2017
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GB/T 15242.3-2021
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Dimensions series of rod and piston dynamic seals for hydraulic cylinders—Part 3:Dimensions and tolerances of groove for co-axial seals
Standard published on 21.5.2021
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GB/T 15242.4-2021
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Dimensions series of rod and piston dynamic seals for hydraulic cylinders—Part 4:Dimensions and tolerances of bearing rings groove
Standard published on 21.5.2021
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GB/T 15244-2013
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Microbeam analysis - Quantitative analysis of silicate glass by wavelength dispersive x-ray spectrometry and energy dispersive x-ray spectrometry
Standard published on 19.7.2013
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GB/T 15246-2022
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Microbeam analysis—Quantitative analysis of sulfide minerals by electron probe microanalysis
Standard published on 12.10.2022
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GB/T 15247-2008
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Microbeam analysis - Electron probe microanalysis - Guidelines for determining the carbon content of steels using calibration curve method
Standard published on 20.8.2008
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GB/T 15248-2008
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The test method for axial loading constant-amplitude low-cycle fatigue of metallic materials
Standard published on 10.4.2008
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GB/T 15249.1-2009
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Methods for chemical analysis of crude gold—Part 1:Determination of gold content—Fire assay gravimetric method
Standard published on 6.5.2009
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GB/T 15249.2-2009
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Methods for chemical analysis of crude gold - Part 2: Determination of silver content - Fire assay gravimetric and EDTA titrimetric methods
Standard published on 6.5.2009
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