The unit is used to produce PVC soft pipe with steek wire reinforcing,The pipe wall is soft PVC plastic ,in which there are spiral steel wire.The pipes have the strong point of pressure and corrosion resistance and antistatic.It is used to convey the pressure or corrosive gas and liquid,vent impure liquid.It is widely used in such areas as mechanical engineering,chemical industry,architecture,agriculture irrigation,vacuum device and dust collector soft pipe.