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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
Technical drawings - Graphical symbols for piping systems - Piping
Standard published on 26.6.2008
Selected format:Technical drawings - Graphical symbols for piping systems - Piping accessories
Standard published on 26.6.2008
Selected format:Technical drawings - Graphical symbols for piping systems - Valves and control components
Standard published on 26.6.2008
Selected format:Technical drawings - Graphical symbols for piping systems - Axonometric representation of graphical symbols for piping, piping accessories and valves etc.
Standard published on 26.6.2008
Selected format:Conductive clothing for live working
Standard published on 15.3.2024
Selected format:Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for flexural strength of monolithic ceramics at room temperature
Standard published on 22.2.2006
Selected format:Chemical reagent - Hexaammonium heptamolybdate tetrahydrate
Standard published on 12.5.2011
Selected format:Semiconductordevices--Discrete devices--Part 3:Signal(including switching)and regulator diodes
Standard published on 24.7.1995
Selected format:Earth-moving machineryHydraulic excavatorsTerminology and commercial specifications
Standard published on 24.7.2014
Selected format:Cooling water radiator for tractor diesel engines - Method of indentifcation symbols
Standard published on 3.2.2008
Selected format:Latest update: 2026-06-21 (Number of items: 2 283 476)
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