We succeed in researching the large caliber hollow wall twine pipes production lines on the foundation of abundantly absorbing and digesting European technology . And acquire many items of national patents . The pipes we produced base on high density polythene (PE) as main material . The rectangle pipes are extruded by the first extruder and then enter into the twine form machine , at the same time , the second extruder spray the rubber strips and then squeeze to reunite it , It is outside wall is neat and smooth . Specification is φ400-φ2200mm. According to different usage term , the hardness degree of ring is divided into four grades and the Max can reach 16KN/m2 . It is suitable for the sour alkali liquid below 10%.This kind of pipes have many extremely excellent characteristics , such as , corrosion resistant light , easy to fix , long life time (50years ),etc , It can substitute the pipes made of high energy consumption material(cement , cast iron , porcelain and ceramics , etc)It is widely used for sewer in superhighway , municipal construction , flats , athetic field,square , mine agricltrue , and bridges etc

Lage wall pipe making machine