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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 technology—Text and office systems—Referenced Data Transfer—Part 1:Abstract service definition
WITHDRAWN published on 25.12.1997
Selected format:Information technology—Text and office systems—Referenced Data Transfer—Part 2:Protocol specification
WITHDRAWN published on 25.12.1997
Selected format:Information technology—Protocol for providing the connectionless-mode network service—Part 1:Protocol specification
WITHDRAWN published on 25.12.1997
Selected format:Integrating-averaging sound level meters
WITHDRAWN published on 25.12.1997
Selected format:Bayplan/stowage plan--Occupied and empty locations message
WITHDRAWN published on 26.12.1997
Selected format:Steel pipe fittings for flanged joint
WITHDRAWN published on 26.12.1997
Selected format:Calculating method for the strength of steel pipe flanged joint
WITHDRAWN published on 26.12.1997
Selected format:Agricultural irrigation equipment—Emitter—Specification and test methods
WITHDRAWN published on 26.12.1997
Selected format:Agricultural irrigation equipment—Emitting-pipe systems—Specification and test methods
WITHDRAWN published on 26.12.1997
Selected format:Code for field measurement of vibrations and pulsations in hydraulic machines
WITHDRAWN published on 26.12.1997
Selected format:Latest update: 2025-11-16 (Number of items: 2 243 995)
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