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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
Code for installation and acceptance of gas fire-extinguishing systems
WITHDRAWN published on 24.2.1997
Selected format:Design code for insulation engineering of industrial equipment and pipe
WITHDRAWN published on 27.2.1997
Selected format:Design code pumping station
WITHDRAWN published on 2.6.1997
Selected format:Design code for pumping station
WITHDRAWN published on 15.7.2010
Selected format:Standard for tests method of engineering rock massas
WITHDRAWN published on 22.1.1999
Selected format:Code for seismic design of nuclear power plants
WITHDRAWN published on 31.7.1997
Selected format:Code for construction and acceptance of water supply and sewerage pipelines
WITHDRAWN published on 5.10.1997
Selected format:Code for measurement method of dynamic properties of subsoil
WITHDRAWN published on 12.9.1997
Selected format:Metallic materials—Sheet and strip—Determination of plastic strain ratio(r-values)
WITHDRAWN published on 1.11.1999
Selected format:Metallic materials—Sheet and strip—Determination of plastic strain ratio
WITHDRAWN published on 10.8.2007
Selected format:Latest update: 2025-12-29 (Number of items: 2 253 390)
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