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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
Evaluation of standard reference carbon black
Standard published on 1.8.2025
Selected format:Oil for use in the carbon black products - Ethylene bottom
Standard published on 30.12.2011
Selected format:Photography - Industrial radiographic films - Determination of ISO speed, ISO average gradient and ISO gradients G2 and G4 when exposed to X-and Gamma-radiation
Standard published on 24.9.2008
Selected format:Methods of test of Geiger - Müller counter tubes
Standard published on 2.7.2008
Selected format:Specifications for retaining rings—Circlips
Standard published on 12.7.2017
Selected format:Specifications for ring--Round wire snap rings
Standard published on 2.7.1986
Selected format:Specifications for ring--Cutting rings
Standard published on 2.7.1986
Selected format:Large series--Product grade A
Standard published on 5.12.2002
Selected format:Large series--Product grade C
Standard published on 5.12.2002
Selected format:Grip rings
Standard published on 2.7.1986
Selected format:Latest update: 2026-04-19 (Number of items: 2 274 482)
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