... and aligned in the straight line, compare with wire pay-off, wire guiding frame, extruder, machine head, water cooling ... with the extruder center.3. Extruder is the main part of the wire PVC coating production line and it ... ., by change the machine head and related accessories. Extruder is compared of drive system, screw, plastic capstan, ... recoiling panels are used alternatively. wire PVC extruder line