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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
Standard test method for measurement of low-temperature viscosity of lubricantsBrookfield viscometer method
Standard published on 19.2.2014
Selected format:Crude petroleum - Determination of water - Coulometric Karl Fischer titration method
Standard published on 16.3.2009
Selected format:Method for sampling asphalt materials
Standard published on 5.10.2025
Selected format:Test method for solubility of asphalt
Standard published on 5.10.2025
Selected format:Standard capacitance boxes
Standard published on 31.3.1989
Selected format:Cylindrical cutters
Standard published on 11.7.2022
Selected format:Testing equipment for electrical energy meters
Standard published on 1.8.2001
Selected format:Alternating current bridge
Standard published on 31.3.1989
Selected format:Test methods of laser power meter in lower-range
Standard published on 31.12.2012
Selected format:Specifications for high temperature test chambers
Standard published on 30.6.2008
Selected format:Latest update: 2026-06-02 (Number of items: 2 281 347)
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