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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
Offshore wind turbine generator systems—Specification for corrosion protection
WITHDRAWN published on 12.5.2017
Selected format:General installation requirements for aero-derivative gas turbine assembly
WITHDRAWN published on 12.5.2017
Selected format:Vacuum technology—Positive-displacement vacuum pump—Measurement of water vapour tolerance
WITHDRAWN published on 12.5.2017
Selected format:Pneumatic fluid power—Push-in connectors for plastic tubes
WITHDRAWN published on 12.5.2017
Selected format:Cathodic protection—MMO/Ti flexible anode
WITHDRAWN published on 31.5.2017
Selected format:CNC hydraulic punching and drilling composite machine for plates
WITHDRAWN published on 12.5.2017
Selected format:Test method for diameter and equivalent diameter of carbon fiber by microscopy
WITHDRAWN published on 28.12.1982
Selected format:Non-destructive testing—Test methods for leak detection by means of acoustic emission
WITHDRAWN published on 12.5.2017
Selected format:NC press brake—Testing of the accuracy
WITHDRAWN published on 12.5.2017
Selected format:Test method for void contentof carbon fiber reinforced plastics by microscopy
WITHDRAWN published on 28.12.1982
Selected format:Latest update: 2026-06-10 (Number of items: 2 281 917)
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