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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
Oval metallic ring gaskets for steel pipe flange joint
WITHDRAWN published on 25.4.1988
Selected format:Specification for asbestes rubber gasket for steel pipe flanges
WITHDRAWN published on 25.4.1988
Selected format:Specifications of non-metallic flat gaskets for pipe flanges
WITHDRAWN published on 29.4.2003
Selected format:Mercury
WITHDRAWN published on 22.7.1985
Selected format:Specification for metallic ring gaskets for steel pipe flange joints
WITHDRAWN published on 25.4.1988
Selected format:Specification of ring joint gaskets for pipe flange
WITHDRAWN published on 5.11.2007
Selected format:Classification of radioactive waste
WITHDRAWN published on 21.12.1995
Selected format:The technical rules about solid radioactive waste processing system for light water reactor plants
WITHDRAWN published on 25.5.1988
Selected format:The technical rules about radioactive waste processing system for light water reactor plants
WITHDRAWN published on 25.5.1988
Selected format:The technical rules about gaseous radioactive waste processing system for light water reactor plants
WITHDRAWN published on 25.5.1988
Selected format:Latest update: 2024-09-08 (Number of items: 2 346 102)
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