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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
Marine shapes
Standard published on 14.2.2008
Selected format:Marine shapes
Standard published on 25.4.2025
Selected format:General specification of electro-hydraulic servo valves for ship
Standard published on 9.2.2007
Selected format:General specifications of marine autopilot with magnetic compass
Standard published on 31.3.1989
Selected format:Terminology for the mechanism and machine science
Standard published on 19.6.2008
Selected format:Inverted tooth(silent) chains and sprockets
Standard published on 24.2.2016
Selected format:Double turbine torque converterSpecification
Standard published on 19.7.2006
Selected format:Steel roller chains,types S and C,attachments and sprockets
Standard published on 19.9.2005
Selected format:Wire electrodes,wires and rods for welding of aluminium and aluminium alloys
Standard published on 7.9.2023
Selected format:Nickel base brazing filler metals
Standard published on 26.6.2008
Selected format:Latest update: 2025-08-24 (Number of items: 2 213 294)
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