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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
Hardmetal burrs--Part 11:Conical pointed-nose burrs(style M)
Standard published on 18.5.2005
Selected format:Hardmetal burrs--Part 12:Inverted cone burrs(style N)
Standard published on 18.5.2005
Selected format:Hardmetal burrs--Part 2:Cylindrical burrs(style A)
Standard published on 18.5.2005
Selected format:Hardmetal burrs--Part 3:Cylindrical round-(ball-)nose burrs(style C)
Standard published on 18.5.2005
Selected format:Hardmetal burrs--Part 4:Spherical burrs(style D)
Standard published on 18.5.2005
Selected format:Hardmetal burrs--Part 5:Oval burrs(style E)
Standard published on 18.5.2005
Selected format:Hardmetal burrs--Part 6:Arch round-(ball-)nose burrs(style F)
Standard published on 18.5.2005
Selected format:Hardmetal burrs--Part 7:Arch pointed-nose burrs(style G)
Standard published on 18.5.2005
Selected format:Hardmetal burrs--Part 8:Flame burrs(style H)
Standard published on 18.5.2005
Selected format:Hardmetal burrs--Part 9:60°and 90°cone burrs(styles J and K)
Standard published on 18.5.2005
Selected format:Latest update: 2026-07-26 (Number of items: 2 290 396)
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