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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
Woodworking machines - Symbols for indications
Standard published on 10.11.2010
Selected format:Machine tool electric appliance reliability evaluation general principles
Standard published on 11.7.2022
Selected format:Electrical accessories—Circuit-breakers for overcurrent protection for household and similar installations—Part 1: Circuit-breakers for a.c. operation
Standard published on 19.11.2020
Selected format:Electrical accessories—Circuit-breakers for overcurrent protection for household and similar installations—Part 2: Circuit-breakers for AC and DC operation
Standard published on 19.11.2020
Selected format:Circuit-breakers for overcurrent protection for household and similar installation—Part 3: Circuit-breakers for d.c. operation
Standard published on 25.4.2016
Selected format:Square and rectangular keys
Standard published on 29.4.2003
Selected format:Color paper processor
Standard published on 9.9.2005
Selected format:Lead acid batteriesfor special type explosion proof power unit in coal mine--Product types and specification
Standard published on 31.3.1989
Selected format:Woodruff keyways
Standard published on 5.6.2003
Selected format:Optical systems--Determination of distortion
Standard published on 10.3.1989
Selected format:Latest update: 2025-08-25 (Number of items: 2 213 294)
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