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See Chinese contents: JB/T 5000.9-2007 JB/T 5000.9-2007: Heavy mechanical general techniques and standards. Part 9: Cutting
This part of JB/T 5000 specifies general requirements of cutting and tolerance without indication; and specific requirements on key groove, hole diameter and hole distance, center hole, tolerance without indication and allowed shape of cutter, etc. This part is applicable to cutting of heavy machinery product parts. All the product drawings and technical documents, if without special requirements, shall meet the requirements of this part.
