1.For double pipe manufacturing. 2.With famous elec and self-manufacturing parts. 3.Large stable pipe output. 4.Long term use Double PVC Pipe Production Line details: 1.Double PVC Pipe Production Line is composed of Extruder,Two cavity molds,Two Vacuum calibration tank,Double haul off,Double cutter and Double stacker 2.AC motor,ABB frequency speed governor, Japanese RKC temperature controller, ...