... PLC CONTROL: The production of hole-punching, cutting-off and roll-forming is operated automatically, after the data, such as ... , 2-station hydraulic puncher, hydraulic cutter, quick-changed-roller roll-former, electronic control system, hydraulic system, etc.4. DRIVEN ... by a speed reducer motor and converter, under reliable punching position control, speed control and length control.5. ROLLFORMING ...