... and quality 3.Long term service PVC Production Line It is mainly used in the manufacture of ... , cable laying, etc. This PVC Pipe Extrusion Line is composed conical twin-screw extruder, vacuum calibration ... counter and intensifying device. This line is of reliable performance and high production effeciency. Model Parameter TH55 ... 21000 22000 28000 30000 PVC mixing Production Line(thermoplastic pellets)