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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
Measurement and evaluation of mechanical vibration of reciprocating piston compressors
WITHDRAWN published on 23.5.1987
Selected format:Measurement and evaluation of mechanical vibration of displacement compressors
WITHDRAWN published on 29.10.2003
Selected format:Number designation and safety classification of refrigerants
WITHDRAWN published on 10.1.2001
Selected format:Number designation and safety classification of refrigerants
WITHDRAWN published on 12.11.2008
Selected format:The model designation of centrifuges
WITHDRAWN published on 23.5.1987
Selected format:The model designation of centrifuges
WITHDRAWN published on 11.7.2005
Selected format:Measurement of water flow in closed conduits—Meters for cold potable water—Part 1:Specifications
WITHDRAWN published on 13.8.1996
Selected format:Measurement of water flow in fully charged closed conduits—Meters for cold potable water and hot water—Part 1:Specifications
WITHDRAWN published on 12.9.2007
Selected format:Measurement of water flow in closed conduits—Meters for cold potable water—Part 2:Installation requirements
WITHDRAWN published on 13.8.1996
Selected format:Measurement of water flow in fully charged closed conduits—Meters for cold potable water and hot water—Part 2:Installation requirements
WITHDRAWN published on 12.9.2007
Selected format:Latest update: 2025-07-21 (Number of items: 2 209 128)
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