... 2.pre-bending function 3.high precision 4:Touch screen 3 roller rolling machine Which is thicknss more than 50mmModelMax bending thicknessmmMax ... tuning cylinder6) Balance device Composed of balance compact, screw3-3. Hydraulic system Composed of Y series motor, gear pump , valves , oil ... tank, pipe and so on.Max pressure is 20 Mpa , testing pressure is 24 Mpa , pressure adjusted by overflow valve, ...