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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
Portable brush-saws--Circular saw-blade guard--Strength
WITHDRAWN published on 1.1.1988
Selected format:Clutch--Terminology
WITHDRAWN published on 1.1.1988
Selected format:Clutch—Terminology
WITHDRAWN published on 5.6.2003
Selected format:Clutch--Classification
WITHDRAWN published on 1.1.1988
Selected format:Clutch—Classification
WITHDRAWN published on 5.6.2003
Selected format:Covered electrodes and welding rods for welding cast iron
WITHDRAWN published on 10.12.1988
Selected format:Carbon steel flux cored wires for arc welding
WITHDRAWN published on 1.1.1988
Selected format:Carbon steel flux cored electrodes for arc welding
WITHDRAWN published on 17.12.2001
Selected format:Silver filler metals for brazing
WITHDRAWN published on 16.3.2000
Selected format:Silver brazing filler metals
WITHDRAWN published on 6.5.2008
Selected format:Latest update: 2026-07-24 (Number of items: 2 290 214)
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