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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
Freight containers--External dimensions and ratings
WITHDRAWN published on 1.1.1985
Selected format:Series 1 freight containers—Classification,dimensions and ratings
WITHDRAWN published on 5.7.1998
Selected format:Series 1 freight containers—Classification,dimensions and ratings
WITHDRAWN published on 4.8.2008
Selected format:Performance requirements for digital sections of metallic cables used in telecommunication network
WITHDRAWN published on 4.2.1993
Selected format:Performance requirements for digital line systems on coaxial pair cables used in telecommunication network
WITHDRAWN published on 4.2.1993
Selected format:Performance requirements for digital line systems on symmetric pair cables used in telecommunication network
WITHDRAWN published on 4.2.1993
Selected format:The transmission performance objectives for mixed analogue-digital public telephone automatic switching network
WITHDRAWN published on 4.2.1993
Selected format:Local telecommunication cables with paper insulation and lead sheath
WITHDRAWN published on 4.2.1993
Selected format:High frequency symmetrical telecommunication cables with copper conductor star quads and lead sheath
WITHDRAWN published on 4.2.1993
Selected format:Fiber optic filters--Part 1:Generic specification
WITHDRAWN published on 4.2.1993
Selected format:Latest update: 2026-09-19 (Number of items: 2 302 332)
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