3 roll plate bending machine pre-bending competitive price PLC system 3 roll plate bending machine1, pressure 160 Tons 2, ... loading, straight length of the terminal≤ (2 ~ 2.5) times over the thickness 6, diameter of the upper ... lower rollers 330 mm 9, rolling speed about 3.5 m / min 10,speed of the upper roller ... roller groups 1 group 13, main motor power 18.5 kW 14, hydraulic motor power 7.5kW 15, ...