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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
Fundamental technical requirements for hydraulic turbines
WITHDRAWN published on 6.3.2006
Selected format:Cavitation pitting evaluation in reaction hydraulic turbines
WITHDRAWN published on 27.1.1995
Selected format:Pulps—Determination of permanganate number
WITHDRAWN published on 29.4.1979
Selected format:Non-thermal storage electrical room heaters
WITHDRAWN published on 27.1.1995
Selected format:General specification and test method for logic analyzers
WITHDRAWN published on 27.1.1995
Selected format:Generic specification and test method for distortion meters
WITHDRAWN published on 27.1.1995
Selected format:Qualification of class 1E static battery chargers and inverters for nuclear power plants
WITHDRAWN published on 27.1.1995
Selected format:Qualification of class 1E static battery chargers and inverters for nuclear power plants
WITHDRAWN published on 30.12.2011
Selected format:Safety classification of instrumentation and control systems and their electrical equipment of nuclear power plants
WITHDRAWN published on 27.1.1995
Selected format:Classification of quality assurance for instrumentation and control system and their electrical equipment of nuclear power plants
WITHDRAWN published on 27.1.1995
Selected format:Latest update: 2026-06-25 (Number of items: 2 284 379)
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