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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
Formats and their sizes of books and magazines
Standard published on 11.11.1999
Selected format:Fundamental technical requirements for hydrogenerators
Standard published on 7.9.2023
Selected format:Optical grade synthetic quartz crystal
Standard published on 30.6.2008
Selected format:Test method for optical grade synthetic quartz crystal
Standard published on 30.6.2008
Selected format:Test methods of mechanical properties of mortar for ferrocement
Standard published on 30.7.2008
Selected format:
Test methods of properties of mortar for ferrocement
Execute Date: august 2026
Standard published on 28.1.2026
Selected format:Tonnage lever balance
Standard published on 6.6.1987
Selected format:Regulators for welding, cutting and the similar processes
Standard published on 14.3.2006
Selected format:Hexagon socket set screws with dog point
Standard published on 2.7.2007
Selected format:White pepper
Standard published on 6.2.2018
Selected format:Latest update: 2026-05-13 (Number of items: 2 276 848)
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