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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
Dead centre—Specification
WITHDRAWN published on 11.5.1988
Selected format:Insterted blaeds gear hobs
WITHDRAWN published on 27.5.1988
Selected format:Cylindrical hardmetal burrs
WITHDRAWN published on 27.5.1988
Selected format:Cylindrical round-(ball-) nose hardmetal burrs
WITHDRAWN published on 27.5.1988
Selected format:Spherical hardmetal hurrs
WITHDRAWN published on 27.5.1988
Selected format:Oval hardmetal burrs
WITHDRAWN published on 27.5.1988
Selected format:Arch round-(ball-) nose hardmetal burrs
WITHDRAWN published on 27.5.1988
Selected format:Arch pointed-nose hardmetal burrs
WITHDRAWN published on 27.5.1988
Selected format:Flame hardmetal burrs
WITHDRAWN published on 27.5.1988
Selected format:60°and 90°cone hardmetal burrs
WITHDRAWN published on 27.5.1988
Selected format:Latest update: 2025-12-26 (Number of items: 2 253 153)
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