Our machine is developed for straightening of thick wing plate. Wide working range, perfect operating ability.Feeding-discharging roller rail.Guide device on material-feeding side ensures successful straightening process before workpiece enter host device.Working principle:Feeding device and transmit rollers consists lever.Bend occurs while straightening plate through,prefabricating force exceed yield strength what decreases elasticity coefficient to reveal straightening. Sored into mechanical straightening and hydraulic straightening according to feeding device out-put straightening force,independently used in wing plates straightening of different plate thickness and strength classes.