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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 processing—Data interchange on 200mm flexible disk cartridges using two-frequency recording at 13262 ftprad, 1.9tpmm, on one side—Part 2:Track format
WITHDRAWN published on 16.7.1994
Selected format:Gas turbine terminology
WITHDRAWN published on 19.7.1994
Selected format:Gas turbines—Vocabulary
WITHDRAWN published on 31.12.2002
Selected format:General principles of measuring methods for quartz clock and watch circuits of semiconductor integrated circuits
WITHDRAWN published on 25.6.1994
Selected format:Blank detail specification for gunn diodes
WITHDRAWN published on 25.6.1994
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WITHDRAWN published on 1.1.1979
Selected format:Specification for air cargo unit load devices
WITHDRAWN published on 19.7.1994
Selected format:Test method for friction element of wet clutch
WITHDRAWN published on 19.7.1994
Selected format:General specification for nickel-cadmium alkaline rechargeable single cells
WITHDRAWN published on 7.7.1994
Selected format:General specification for vented nickel-cadmium prismatic rechargeable single cells
WITHDRAWN published on 4.12.2002
Selected format:Latest update: 2026-01-23 (Number of items: 2 257 393)
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