Features: 1. The production line produces all kind of polyolefin material, multi-layers spiral strengthening pipe. 2. The screw extruder especially used for polyolefin material possesses effective plasticizing effect and high extrusion speed. 3. The special detached type compounding screw and die head with structure and reasonable channel are applicable to produce pipes with smooth inside and outside face. 4. Unique calibration and cooling mode is capable of producing pipe with diameter from Φ50 to Φ200mm, production speed is up to 0.4-1.5m/min. 5. Optimum spiral copper sizing sleeve, its entrance carrying pre-cooling and powerful vacuum device to suit for high speed extruding pipe. 6. Stainless steel cooling tank is tree-dimensional regulation, longitudinal moved motor. 7. High efficient cooling comes from peculiar spraying nozzles and high efficiency water pump.