... ,Two cavity molds,Two Vacuum calibration tank,Double haul off,Double cutter and Double stacker 2.AC motor,ABB frequency speed ... Vacuum calibration tank material:Stainless steel.7.Double Caterpillar adjusting method: pneumatic compress device.8.Double cutter: Most cutting times,20 ... fees and do not charge service fees.Extruder for Double pipe producing: ModelSJZ-45SJZ-51SJZ-55SJZ-65SJZ-80ISJZ-80IISJZ ...