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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
Malleable iron castings
WITHDRAWN published on 25.6.1988
Selected format:Metallographic test for spheroidal graphite cast iron
WITHDRAWN published on 25.6.1988
Selected format:Metallographic test for spheroidal graphite cast iron
WITHDRAWN published on 30.10.2009
Selected format:Foundry silica sand
WITHDRAWN published on 30.7.1998
Selected format:Foundry silica sand
WITHDRAWN published on 26.9.2010
Selected format:Methods of liquid penetrant testing and classification of indication for steel castings
WITHDRAWN published on 25.6.1988
Selected format:Penetrant testing for steel castings
WITHDRAWN published on 23.8.2007
Selected format:The methods for magnetic particle testing and for specifying quality levels of steel castings
WITHDRAWN published on 25.6.1988
Selected format:Magnetic particle testing for steel castings
WITHDRAWN published on 23.8.2007
Selected format:Qualification and certification for nondestructive testing personnel
WITHDRAWN published on 23.11.1999
Selected format:Latest update: 2025-02-05 (Number of items: 2 224 044)
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