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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
Test method for tyre valves—Part 3: Test methods for Snap-in valves
Standard published on 24.2.2016
Selected format:Test methods for tyre valves—Part 4: Test methods for tubeless clamp-in valves
Standard published on 24.2.2016
Selected format:Test method for tyre valves—Part 5: Test methods for large core chamber tyre valves
Standard published on 24.2.2016
Selected format:Test method for tyre valve—Part 6:Test method for core
Standard published on 11.10.2021
Selected format:Test method for tyre valves - Part 7: Components test methods
Standard published on 15.12.2009
Selected format:Rules for application and maintenance of tyres
Standard published on 29.9.2017
Selected format:Rim contour measure
Standard published on 11.9.2015
Selected format:Steel cord conveyor belts for general use
Standard published on 17.12.2013
Selected format:Single-mode optical fibres for telecommunication—Part 1: Characteristics of a dispersion unshifted single-mode optical fibre
Standard published on 2.6.2020
Selected format:Single-mode optical fibres for telecommunication—Part 2: Characteristics of a cut-off wavelength shifted single-mode optical fibre
Standard published on 2.6.2020
Selected format:Latest update: 2026-04-16 (Number of items: 2 272 849)
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