... ,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,SIEMENS contactor.3.Screw Nitriding treatment,hardness HV740-940 ... fees and do not charge service fees.Extruder for Double pipe producing: ModelSJZ-45SJZ-51SJZ-55SJZ-65SJZ-80ISJZ-80IISJZ ...