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Standards GB - Chinese national standards - Page 273
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 13277.1-2023
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Compressed air—Part 1Contaminants and purity classes
Standard published on 23.5.2023
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GB/T 13277.2-2015
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Compressed air—Part 2: Test methods for oil aerosol content
Standard published on 31.12.2015
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GB/T 13277.3-2015
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Compressed air—Part 3: Test methods for measurement of humidity
Standard published on 31.12.2015
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GB/T 13277.4-2015
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Compressed air—Part 4: Test methods for solid particle content
Standard published on 31.12.2015
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GB/T 13277.5-2019
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Compressed air—Part 5: Test methods for oil vapour and organic solvent content
Standard published on 25.3.2019
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GB/T 13277.6-2021
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Compressed air—Part 6Test methods for gaseous contaminant content
Standard published on 31.12.2021
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GB/T 13277.7-2021
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Compressed air—Part 7Test method for viable microbiological contaminant content
Standard published on 31.12.2021
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GB/T 13277.8-2023
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Compressed air—Part 8Test methods for solid particle content by mass concentration
Standard published on 17.3.2023
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GB/T 13277.9-2022
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Compressed air—Part 9Test methods for liquid water content
Standard published on 30.12.2022
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GB/T 13279-2015
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Stationary reciprocating air compressors for general use
Standard published on 9.10.2015
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