... 1.Single screw granulator,single screw extruder,double screw extruder,extruder.This kind of machine is mainly used to process PP, ... has the advantage of simple production technological process,high output,stable quality and low lost.4.SJZ Series conical double screw plastic ... molding.Equipped with different kinds of molds and auxiliary machines, it can produce kinds of PVC pipes,profiles,plates,bars ...