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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
Design for control rooms of nuclear power plants
WITHDRAWN published on 29.8.1992
Selected format:Design criteria for supplementary control point of nuclear power plants
WITHDRAWN published on 29.8.1992
Selected format:Design criteria for supplementary control point of nuclear power plants
WITHDRAWN published on 9.10.2015
Selected format:Permanent magnet D.C. tachogenerator—General specification
WITHDRAWN published on 29.8.1992
Selected format:Calibration of force-proving instruments used for the verification of testing machines
WITHDRAWN published on 17.10.2000
Selected format:Calibration of force-proving instruments used for the verification of uniaxial testing machines
WITHDRAWN published on 20.6.2008
Selected format:DDZ- series process electronic control system--Frequency converter
WITHDRAWN published on 29.8.1992
Selected format:DDZ- series process electronic control system--Constant current setter
WITHDRAWN published on 29.8.1992
Selected format:DDZ- series process electronic control system—Indicating instrument
WITHDRAWN published on 29.8.1992
Selected format:Water level control and alarm devices for industrial boilers
WITHDRAWN published on 29.8.1992
Selected format:Latest update: 2026-06-16 (Number of items: 2 283 261)
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