How about your HDPE large diameter winding pipe extrusion line?
HDPE Large diameter winding pipe extrusion line
We succeed  in researching the larger 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 dase on high sensity 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.Its outside wall is neat and smooth.Specification is φ400mm-φ2200mm.According to different usage term, the hardness degree of ring is divided into four grades and the max can reach 16KN/M10%.                        

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