The combination head is one time boring, two times rolling method, or two times boring, one times rolling method, which not only guarantees the processing quality, but also greatly improves the working efficiency.
Tool Dia. (mm) | Bar Dia (mm) | Tool Dia. (mm) | Bar Dia (mm) |
φ38-φ43 | φ35 | φ44-φ48 | φ40 |
φ49-φ60 | φ43 | φ61-φ72 | φ56 |
φ73-φ77 | φ65 | φ78-φ87 | φ70 |
φ88-φ107 | φ80 | φ108-φ137 | φ100 |
φ138-φ177 | φ130 | φ178-φ250 | φ160 |
φ251-φ500 | φ220 | φ501-φ800 | φ350 |
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