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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
Telephone receivers--Main dimensions
WITHDRAWN published on 1.1.1981
Selected format:General specification for launching machine
WITHDRAWN published on 12.5.2011
Selected format:Tower crane—The rules of installation and disassembly
WITHDRAWN published on 12.5.2011
Selected format:Mobile cranes—Drum and sheave sizes
WITHDRAWN published on 12.5.2011
Selected format:Cranes—Safety requirements for loader cranes
WITHDRAWN published on 12.5.2011
Selected format:Bridge type grab ship unloader
WITHDRAWN published on 12.5.2011
Selected format:Mechanical parking system—Vocabulary
WITHDRAWN published on 12.5.2011
Selected format:Telephone hand generators--Technical requirements
WITHDRAWN published on 1.1.1981
Selected format:Valve test for fugitive emissions
WITHDRAWN published on 12.5.2011
Selected format:Magnesium alloys die casting safety criterion
WITHDRAWN published on 12.5.2011
Selected format:Latest update: 2026-03-27 (Number of items: 2 269 573)
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