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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
400mA X-ray equipment for medical diagnosis
WITHDRAWN published on 1.1.1988
Selected format:Medical X-ray equipment—Specification for high voltage cable plug and socket connections
WITHDRAWN published on 22.12.1988
Selected format:B mode ultrasonic diagnostic equipment
WITHDRAWN published on 3.6.1997
Selected format:B mode mechanical sector scan ultrasonic diagnostic equipment
WITHDRAWN published on 1.1.1988
Selected format:Electric irons
WITHDRAWN published on 1.1.1988
Selected format:Stereomicroscope
WITHDRAWN published on 22.12.1988
Selected format:-
WITHDRAWN published on 1.1.1988
Selected format:Leveller
WITHDRAWN published on 30.12.1997
Selected format:Test method for noise emitted by copying machine
WITHDRAWN published on 22.12.1988
Selected format:Ocular screw thread for optical instruments
WITHDRAWN published on 1.1.1988
Selected format:Latest update: 2026-09-04 (Number of items: 2 300 131)
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