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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
Aids to navigation on inland waterways
Standard published on 29.12.2022
Selected format:Rolling bearingsMounting dimensions
Standard published on 31.10.2025
Selected format:Lifejacket lights
Standard published on 29.8.2025
Selected format:Marine bronze flanged stop valves
Standard published on 20.10.2008
Selected format:Image produced by camera aperture type W on 16mm motion-picture film--Position and dimensions
Standard published on 27.2.1986
Selected format:Recorded characteristics for magnetic sound records on 35mm and 16mm motion-picture films containing no picture
Standard published on 28.12.1994
Selected format:Marine bronze flanged stop check valves
Standard published on 23.3.2009
Selected format:Test methods for physical and chemical properties of ramie fiber
Standard published on 24.7.2024
Selected format:Marine bronze flanged check valves
Standard published on 3.7.2015
Selected format:Terminology of mechanical seal
Standard published on 10.12.2015
Selected format:Latest update: 2026-08-26 (Number of items: 2 298 418)
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