... 4)Model:SJZ,JYH,SJ The pipe extruder and extrusion line is mainly used for water discharging in agriculture, buildingand ... cable laying.1)This extrusion line is made up of extruder, vacuum calibrator, hauler, cutter ... screw extruder and parallel twin screw extruder. 3)The extrusion line is controlledby computer.4)The screw uses comprehensive mixed part ...