CPC Main Group
B23B 41/00 Boring or drilling machines or devices specially adapted for particular work ; Accessories specially adapted therefor
8 direct subcodes
Child Classifications
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- B23B 41/02 for boring deep holes; Trepanning, e.g. of gun or rifle barrels
- B23B 41/04 for boring polygonal or other non-circular holes
- B23B 41/06 for boring conical holes
- B23B 41/10 for boring holes in steam boilers
- B23B 41/12 for forming working surfaces of cylinders, of bearings, e.g. in heads of driving rods, or of other engine parts
- B23B 41/14 for very small holes
- B23B 41/16 for boring holes with high-quality surface