1.CONICAL DOUBLE-SCREW PLASTIC EXTRUDER. 2. Used in pipes, plates, special shaped ... or granulator line2. Delivery 15days after recyciving the prepaymentThe conical double-screw plastic extruder has the characters such as force extruding, high quality ... self temperature controlling and vacuum exhausting devices. It suits for the production of pipes, plates, special shaped materials, etc. Main ...