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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
Maintainability—Part 9:Maintenance and maintenance support
Standard published on 29.12.2017
Selected format:Information processing--Magnetic disk for data storage devices--83000 flux transitions per track 130mm outer diameter 40mm inner diameter
Standard published on 20.6.1988
Selected format:Semiconductor devices--Integrated circuits--Part 2:Digital integrated circuits--Section Five:Blank detail specification for complementary MOS digital inte-grated circuitsseries 4000B and 4000UB
Standard published on 17.11.1998
Selected format:Blank detail specification for semiconductor inte-grated circuit operational amplifiers
Standard published on 23.6.1988
Selected format:Procurement specification for self-locking nuts
Standard published on 22.12.1988
Selected format:Blank detail specification for industrial heating tetrode
Standard published on 23.6.1988
Selected format:General specification of gas discharge tubes for overvoltage protection
Standard published on 23.6.1988
Selected format:Methods of measurement of gas discharge tubes for overvoltage protection
Standard published on 23.6.1988
Selected format:Useful screen dimensions for color picture tubes
Standard published on 5.11.2012
Selected format:Heat resistant iron castings
Standard published on 1.4.2009
Selected format:Latest update: 2026-11-03 (Number of items: 2 209 039)
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