1.Nitriding screw and barrel 2.stepless speed regulation and large torque 3.automatic control Application and feature:SJ series single screw plastic extruder with corresponding mould,auxiliary equiment and screw can produce PVC,PP,PE,nylon,ABS thermoplastic product and half-products such as pipe,film,granuleand bottle etc. Feature:Nitriding screw and barrelstepless speed regulation and large ...