what kind of decoilers are there in roll forming machine?

1.Manual decoiler Feature: it is ecnomic and with low price. But it has no active rotation, passive stretching by roll forming machine. In addition, it has different max weight. 2.Hydraulic decoiler Feature:it can automatically rotate forward and reverse. It can be automatically adjusted according to the inner diameter of steel coil. The supporting arm and pressure arm can fix the steel curling material to prevent it from loosening and falling. But it has high price and need more space. 3.Motor decoiler There is a motor active drive, forward rotation and reverse rotation by the motor drive, reduce the load of the machine on the unwinding machine when working with the machine.