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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
Free-cutting structural steels
Execute Date: may 2026
Standard published on 31.10.2025
Selected format:Steels of blade for steam turbine
Standard published on 30.9.2014
Selected format:Aluminum alloy ingots for casting
Standard published on 13.10.2016
Selected format:Zinc alloy ingots for casting
Standard published on 27.3.2014
Selected format:120 degree countersunk head semi-tubular rivets
Standard published on 2.7.1986
Selected format:Casting bearing alloy ingots
Standard published on 27.11.2013
Selected format:Textiles--Burning behaviour--Determination of surface burning time of fabrics
Standard published on 26.2.2001
Selected format:Textiles - Burning behaviour - Determination of ease of ignition of vertically oriented specimens
Standard published on 19.3.2009
Selected format:Meteorological liquid-in-glass thermometer
Standard published on 1.12.2010
Selected format:Hot-rolled quality carbon structural steel strip
Standard published on 20.8.2021
Selected format:Latest update: 2026-04-24 (Number of items: 2 274 650)
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