At present, the sewage and drainage systems in China still use the cement pipes. However, due to its instable chemical property and loose connection, it has become the principle cause for environment pollution. On the other hand, the cast iron pipes can not be used anymore for the disadvantages, such as the inconvenient construction and expensive cost. In recent years, the plastic pipes become successful substitute to the cement pipes. Especially the newly developed spiral large diameter plastic pipes have been drawn great attention and have become the substitute products for cement pipes and cast iron pipes. All these shows that the spiral large diameter plastic pipes have a great market potentiality.
The main engine has adopted the high efficient single screw extruder. The optimized screw has used the German technique which enables it to guarantee high speed and high quality extrusion. It has employed the multiple handpiece, tow extruders charging and screw rotating formation. Its delicately and unique design guarantees the high quality of its product. The advanced PLC Connected with special fittings.