... tube making machine. die set,pipe roll set. Roller and mould, welded pipe ... shaped pipe, etc. 2. Precise with only 0.05mm tolerance. 3. With CNC machine. 1. Description: Roller ... mould, etc.3. Specification range for round pipe: 5-325mm.4. Specification range for square pipe: ... mouild steel Cr12mov material set high wear resistance, toughness, resistance to high pressure, high hardness, hard quenching.9. ...