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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
Railway tank car for liquefied gases
WITHDRAWN published on 15.12.2006
Selected format:Specifications for aluminium tank cars
WITHDRAWN published on 22.3.1989
Selected format:Nominal pressure for pipe components
WITHDRAWN published on 26.3.1990
Selected format:Pipework components—Definition and selection of PN
WITHDRAWN published on 13.1.2005
Selected format:Daylight press
WITHDRAWN published on 1.1.1989
Selected format:Daylight press
WITHDRAWN published on 21.2.1989
Selected format:Rubber single screw extruder--Specification
WITHDRAWN published on 1.1.1989
Selected format:Rubber single screw extruder--Series
WITHDRAWN published on 1.1.1989
Selected format:Technical requirements for motor vehicle engine valves
WITHDRAWN published on 1.1.1989
Selected format:-
WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2026-04-08 (Number of items: 2 271 105)
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