1) It is mainly used in the manufacture of PVC pipes with various diameters and wall thickness in the aspects such as the agricultural and constructional plumbing, cable laying etc.

2) The set is composed of conical twin-screw extruder, vacuum cablibrating tank, haull-off, cutter, stacker or belling machine etc.

3) The extruder and haul-off machine adopt the imported AC frequency control device.

The vacuum pump and hauling motor employ superior goods.

4) Haul-off machine of different specifications, such as two caterpillars, three caterpillars, four caterpillars, six caterpillars etc are designed for different requirements.

5) It is additionally attched with length measuring apparatus and thickness increasing device.

6) The unit is of reliable performance and high production efficiency