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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
Types basic parameters of three screw pumps
WITHDRAWN published on 31.3.1989
Selected format:Three screw pumps
WITHDRAWN published on 19.11.2002
Selected format:Technical specifications of three screw pumps
WITHDRAWN published on 31.3.1989
Selected format:Types and basic parameters of the centrifugal slurry pumps
WITHDRAWN published on 1.1.1989
Selected format:Methods of measuring and evaluating vibration of pumps
WITHDRAWN published on 1.1.1989
Selected format:Methods of measuring and evaluating noise of pumps
WITHDRAWN published on 1.1.1989
Selected format:Stationary air compressors--Safety rules and code of practice
WITHDRAWN published on 31.3.1989
Selected format:Stationary air compressors—Safety rules and code of practice
WITHDRAWN published on 31.8.2005
Selected format:Compressed air dryers--Specifications and testing
WITHDRAWN published on 31.3.1989
Selected format:Determination of sound power level for noise emitted by centrifuger separator and filter — Engineering method
WITHDRAWN published on 31.3.1989
Selected format:Latest update: 2026-01-28 (Number of items: 2 257 539)
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