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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
Information system project surveillance specification—Part 3:Electronic equipment room system project surveillance specification
WITHDRAWN published on 24.8.2007
Selected format:Information system project surveillance specification—Part 4:Computer network system project surveillance specification
WITHDRAWN published on 24.8.2007
Selected format:Information system project surveillance specification—Part 5:Software project surveillance specification
WITHDRAWN published on 24.8.2007
Selected format:Information system project surveillance specification—Part 6:Information system project security surveillance specification
WITHDRAWN published on 24.8.2007
Selected format:Test method for tube diameter of porous ceramics
WITHDRAWN published on 1.1.1980
Selected format:Safety of machinery—Prevention of unexpected start-up
WITHDRAWN published on 21.2.2005
Selected format:Safety of machinery—Two-hand control devices—Functional aspects and design principles
WITHDRAWN published on 21.2.2005
Selected format:Specification of pipeline valves
WITHDRAWN published on 21.2.2005
Selected format:Linear motion rolling bearings—Rolling bearings, linear motion ballrecirculating, sleeve type—Accessories
WITHDRAWN published on 21.2.2005
Selected format:Dimensions of flexible graphite gaskets reinforced with tanged metal sheet for pipe flanges
WITHDRAWN published on 21.2.2005
Selected format:Latest update: 2025-12-24 (Number of items: 2 253 093)
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