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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
Terminology for air cushion vehicle
Standard published on 31.10.2025
Selected format:Specification for welding of copper and copper alloy clad steel plates
Standard published on 23.3.2009
Selected format:Specification for welding of stainless steel clad plate
Standard published on 30.7.2008
Selected format:Specification for welding of titanium and titanium alloy clad steel plates
Standard published on 23.3.2009
Selected format:Semiconductor devices Discret devices Blank detail specification for bidirectional triode thyristors(triacs),ambient and case-rated,for currents greater than 100A
Standard published on 23.3.2005
Selected format:Semiconductor devices Discrete devices Part 6:Thyristors Section Three-Blank detail specification for reverse blocking triode thyristors,ambient and case-rated,for currents greater than 100A
Standard published on 23.3.2005
Selected format:Cinematography - Colour motion-picture prints and slides for television-density specifications
Standard published on 30.8.2006
Selected format:Overall electro-acoustic frequency response for reproduction of 35mm optical sound track--Reproduction characteristics
Standard published on 16.9.1991
Selected format:Compatibility test procedures of clock and synchronization equipment of digital switch introducedinto digital network
Standard published on 16.9.1991
Selected format:Networking specifications for digital radio systems
Standard published on 29.10.2008
Selected format:Latest update: 2026-05-04 (Number of items: 2 275 493)
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