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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
Screw thread shanks for thread forming screw--Metric coarse thread series
Standard published on 2.7.1986
Selected format:Chemical reagent--Ammonium dichromate
Standard published on 10.11.2003
Selected format:Cross recessed pan head thread rolling screws
Standard published on 24.6.2014
Selected format:Cross recessed countersunk head thread rolling screws
Standard published on 24.6.2014
Selected format:Cross recessed raised countersunk head thread rolling screws
Standard published on 24.6.2014
Selected format:Hexagon head thread rolling screws
Standard published on 24.6.2014
Selected format:Hexalobular socket head cap thread rolling screws
Standard published on 24.6.2014
Selected format:Classification and codes of occupations
Standard published on 10.9.2015
Selected format:Limits of radionuclides in building materials
Standard published on 2.9.2010
Selected format:Technical drawings - Graphical symbols for piping systems - Basic principles
Standard published on 26.6.2008
Selected format:Latest update: 2026-06-21 (Number of items: 2 283 476)
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