1.twin screw extruder 2.Extruder 3.conical twin double/two screw 4.plastic extruder ExtruderPlastic machine: SJZ series conical twin/double/two screw extruderSJZ seriesconical twin screw extruder is composed of barrel screw, gear transmission system, measurable feeding, vacuum deaerating, heating, cooling and electro control components etc.It is mainly used in plasticizing, extruding and forming PVC pipe, plate, sheet, film, profile, and pelletizing etc.