The excellent features of the equipment are as follow: The main machines adopt two extruders cooperation,well-developed technology prescription obtains from many years experience can cause the pipe specific gravity drop in till 0.9,and the pipe have uniform foam and high intensity; Specially design co-extruding die,merely need to replace core mandril,it may produce solid-wall pipe,solid wall inner helix pipe foamed pipe and foam inner helix pipe; By changing the die it can produce the Nanometer anti-virus PVC feeding pipe,hollow wall inner screw thread muffle pipe and multilayer composite pipe,like PVC/ABS and so on. It enjoys a good prospect in development and application in China.