PVC four pipes (4 in 1) extrusion line is made of a 65/132 conical twin screw extruder, one set of 4 in 1 mould, one set of calibration table , haul-off & cutting combination (dust free) and stacker.The diameter of the best production tube is from16mm to 32mm.Main features: high capacity, low power consumption, low water gas consumption, low occupation, low noise, low dust, etc.