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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 gum content in fuels - By jet evaporation
Standard published on 25.8.2008
Selected format:
Determination of gum content in fuels—Jet evaporation
Execute Date: may 2026
Standard published on 5.10.2025
Selected format:Acorn nuts - Assembling type
Standard published on 25.8.2008
Selected format:Acorn hexagon nuts with flange - Welding type
Standard published on 15.10.2009
Selected format:Hexagon cap nuts - Welding type
Standard published on 15.10.2009
Selected format:Prevailing torque type hexagon acorn nuts with non-metallic insert - Welding type
Standard published on 15.10.2009
Selected format:Determination of lead in gasoline—Atomic absorption spectrometry
Standard published on 31.12.2015
Selected format:Petroleum products--Determination of saponification number
Standard published on 28.3.2003
Selected format:Determination of demulsibility characteristics of lubricating oils
Standard published on 18.10.2019
Selected format:Liquid petroleum products--Viscosity-temperature charts
Standard published on 3.7.1987
Selected format:Latest update: 2026-05-02 (Number of items: 2 275 366)
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