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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
High temperature shear test method for metals wires and rivets
WITHDRAWN published on 17.5.1986
Selected format:Micrographic method for determining area fraction of the -phases using charts in ferritic-austenitic stainless steels
WITHDRAWN published on 17.5.1986
Selected format:Steel forgings—Method for ultrasonic examination
WITHDRAWN published on 13.12.1991
Selected format:Steel forgings—Method for ultrasonic testing
WITHDRAWN published on 13.5.2008
Selected format:Radii of sphere surfaces
WITHDRAWN published on 19.5.1986
Selected format:Lubricating grooves
WITHDRAWN published on 19.5.1986
Selected format:Knurl
WITHDRAWN published on 19.5.1986
Selected format:Rounding and chamferd of parts
WITHDRAWN published on 19.5.1986
Selected format:Relief grooves for grinding wheels
WITHDRAWN published on 19.5.1986
Selected format:Determination of sound power level for noise emitted by gear units
WITHDRAWN published on 19.5.1986
Selected format:Latest update: 2026-04-15 (Number of items: 2 272 661)
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