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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
Cylindrical shanks for milling cutters - part 1: Types and sizes of plain cylindrical shanks
Standard published on 20.7.2006
Selected format:Cylindrical shanks for milling cutters - part 2: Types and sizes of flatted cylindrical shanks
Standard published on 20.7.2006
Selected format:Parallel shanks for milling cutters--Part 3:Dimen-sional characteristics of parallel shanks with 2°angular flats
Standard published on 5.7.1996
Selected format:Cylindrical shanks for milling cutters - part 4: Types and sizes of threaded cylindrical shanks
Standard published on 20.7.2006
Selected format:Interchangeability dimensions for milling cutter or milling cutter arbors
Standard published on 20.8.2021
Selected format:Tool chucks for flated parallel shank tools - part 1: Dimensions of the driving system of tool shanks
Standard published on 20.7.2006
Selected format:Tool chucks for flated parallel shank tools - Part 2: Connecting dimensions of chucks and designation
Standard published on 20.7.2006
Selected format:Parallel shank twist drills - Part 1: The types and dimensions for small type twist drills with oversize parallel shank
Standard published on 4.11.2008
Selected format:Parallel shank twist drills - Part 2: The types and dimensions for parallel shank stub series twisl drills and parallel shank jobber series twist drills
Standard published on 4.11.2008
Selected format:Parallel shank twist drills - Part 3: The types and dimensions for parallel shank long series twist drills
Standard published on 4.11.2008
Selected format:Latest update: 2026-06-22 (Number of items: 2 284 351)
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