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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
Hexamethylenetetramine for industrial use
Execute Date: may 2026
Standard published on 31.10.2025
Selected format:Nominal diameter for pressure vessels
Standard published on 10.12.2015
Selected format:Weld studs for manual welding
Standard published on 25.8.2008
Selected format:Performance requirements and test methods for marker beacon
Standard published on 17.10.2000
Selected format:Performance requirements and test methodsfor non-directional radio beacon
Standard published on 17.10.2000
Selected format:Methods of the measurement of speed fluctuations in sound recording and reproducing equipment
Standard published on 30.12.2011
Selected format:Colourless optical glass
Standard published on 10.5.2019
Selected format:General technical requirements of gas discharge tubes for the over-voltage protection of telecommunications installations
Standard published on 31.3.2008
Selected format:PhotographyPhotographic materialsDetermination of ISO resolving power
Standard published on 23.1.2006
Selected format:Dimensionshapeweight and tolerance for cold-drawn roundsquare and hexagonal steels
Standard published on 22.12.1994
Selected format:Latest update: 2026-04-22 (Number of items: 2 274 512)
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