... Hydraulic cooling system 4.expanding, contracting TM60NC hydraulic automatic copper tube expanderMain features: Body by welding, mechanical parts assembly, ... study and understand4. Partition hypothesis speed, high pipe-bending precision up to ±0.15°5. 16 groups ... saving much time7. Suitable for bending steel pipe, stainless steel pipe, copper pipe, aluminum pipe, etc.8. Can install auxiliary push die, ...