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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
Knurled nuts
Standard published on 24.6.1988
Selected format:Chrysotile asbestos
Standard published on 20.8.2008
Selected format:Method of sampling and preparation for chrysotile asbestos
Standard published on 31.12.2012
Selected format:Testing method for specific surface of cement - Blaine method
Standard published on 9.1.2008
Selected format:Terms of concrete admixtures
Standard published on 29.12.2017
Selected format:Terms of concrete admixtures
Standard published on 29.12.2017
Selected format:Concrete admixtures
Standard published on 31.12.2008
Selected format:
Concrete admixtures
Execute Date: august 2026
Standard published on 31.10.2025
Selected format:Methods for testing uniformity of concrete admixtures
Standard published on 28.12.2023
Selected format:Small hexagon thin nuts--Fine pitch thread
Standard published on 24.6.1988
Selected format:Latest update: 2026-05-01 (Number of items: 2 275 280)
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