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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
Specifications for the design of outdoor drainage
WITHDRAWN published on 28.4.1987
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WITHDRAWN published on 1.1.1988
Selected format:Cup head square neck bolts with large head—Product grade C
WITHDRAWN published on 28.8.1998
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WITHDRAWN published on 1.1.1981
Selected format:Code for Design of Extinguisher Distribution in Buildings
WITHDRAWN published on 1.1.1990
Selected format:Chemical reagent—Hexamethylene tetramine
WITHDRAWN published on 1.3.1993
Selected format:Overall electro-acoustic frequency response for reproduction of magnetic stripe sound records on 70mm motion-picture release prints—Reproduction characteristics
WITHDRAWN published on 17.12.1992
Selected format:Time and control code for video recording
WITHDRAWN published on 17.12.1992
Selected format:Time and control code for SDTV video tape recording
WITHDRAWN published on 29.6.2012
Selected format:Terminology of work quota
WITHDRAWN published on 26.12.1992
Selected format:Latest update: 2026-09-21 (Number of items: 2 302 422)
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