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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
Compressed air—Part 4: Test methods for solid particle content
Standard published on 31.12.2015
Selected format:Compressed air—Part 5: Test methods for oil vapour and organic solvent content
Standard published on 25.3.2019
Selected format:Compressed air—Part 6Test methods for gaseous contaminant content
Standard published on 31.12.2021
Selected format:Compressed air—Part 7Test method for viable microbiological contaminant content
Standard published on 31.12.2021
Selected format:Compressed air—Part 8Test methods for solid particle content by mass concentration
Standard published on 17.3.2023
Selected format:Compressed air—Part 9Test methods for liquid water content
Standard published on 30.12.2022
Selected format:Stationary reciprocating air compressors for general use
Standard published on 9.10.2015
Selected format:Lead-Acid battery used for passenger trains
Standard published on 13.6.2008
Selected format:Accuracy class of measuring instruments and display instruments for industrial process measurement and control
Standard published on 30.6.2008
Selected format:Design criteria of safety systems in nuclear power plants
Standard published on 25.4.2025
Selected format:Latest update: 2026-04-02 (Number of items: 2 270 295)
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