1.CONICAL DOUBLE-SCREW PLASTIC EXTRUDER. 2. Used in pipes, plates, special shaped materials, etc. 3.Delivery 15days 1.For PVC pipe or granulator line2. Delivery 15days after recyciving the prepaymentThe conical double-screw plastic extruder has the characters such as force extruding, high quality, wide application, long usage time, low cutting speed, not-easy decomposition of material, good ...