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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
External cylindrical centerless grinding machines—Parameters
WITHDRAWN published on 9.6.2004
Selected format:Internal cylindrical grinding machines--Parameters
WITHDRAWN published on 11.6.1986
Selected format:Internal cylindrical grinding machines—Parameters
WITHDRAWN published on 9.6.2004
Selected format:Vertical internal broaching machines--Testing of the accuracy
WITHDRAWN published on 1.1.1986
Selected format:Vertical internal broaching machines—Testing of the accuracy
WITHDRAWN published on 5.7.1996
Selected format:Vertical surface broaching machines--Testing of the accuracy
WITHDRAWN published on 1.1.1986
Selected format:Vertical surface broaching machines—Testing of the accuracy
WITHDRAWN published on 5.7.1996
Selected format:Surface grinding machines for grinding slideways--Parameters
WITHDRAWN published on 11.6.1986
Selected format:Hob sharpening machines--Parameters
WITHDRAWN published on 1.1.1986
Selected format:Surface grinding machines with vertical grinding wheel spindle and reciprocating table—Testing of the accuracy
WITHDRAWN published on 11.6.1986
Selected format:Latest update: 2026-04-14 (Number of items: 2 272 146)
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