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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
Flat countersunk nib bolts
WITHDRAWN published on 24.6.1988
Selected format:Specifications for antiseismic construction design
WITHDRAWN published on 1.1.1989
Selected format:Specifications for the design of haloalkane 1211 fire-fighting systems
WITHDRAWN published on 16.9.1987
Selected format:The test chart of magnification for electrostatic copying process
WITHDRAWN published on 1.1.1989
Selected format:Test chart of overall solid area for electrostatic copying process
WITHDRAWN published on 1.1.1989
Selected format:Test chart of image missing in printed area for electrostatic copying process
WITHDRAWN published on 1.1.1989
Selected format:QDZ process pneumatic control system--Controller
WITHDRAWN published on 1.1.1989
Selected format:QDZ process pneumatic control system--Relay
WITHDRAWN published on 1.1.1989
Selected format:QDZ process pneumatic control system--Setting unit
WITHDRAWN published on 1.1.1989
Selected format:QDZ process pneumatic control system--Indicating-recording controller
WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2026-03-05 (Number of items: 2 265 218)
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