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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
Insulating hollow tubes and foam-filled tubes and solid rods for live working
WITHDRAWN published on 17.1.2003
Selected format:Specification for steam turbine safety monitoring devices
WITHDRAWN published on 17.2.1992
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WITHDRAWN published on 1.1.1982
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WITHDRAWN published on 9.11.1987
Selected format:Specifications for construction and acceptance of civil air defence construction
WITHDRAWN published on 23.6.1990
Selected format:Terms used in network planning techniques
WITHDRAWN published on 26.2.1992
Selected format:General rule for representation on network planning techniques
WITHDRAWN published on 26.2.1992
Selected format:General program of network planning techniques used in project management
WITHDRAWN published on 26.2.1992
Selected format:Steel plate butt-welding pipe fittings
WITHDRAWN published on 28.3.1992
Selected format:Steel plate butt-welding pipe fittings
WITHDRAWN published on 19.9.2005
Selected format:Latest update: 2026-01-23 (Number of items: 2 257 393)
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