The double strand ppr pipe production line is used to produce water supply double layers (double color) ppr pipe for hot/cold water transportation, the pipe diameter ranges are 20mm-32mm, the standard pressure ratings PN6,PN12, PN20,PN25; the produced pipes are mainly applied in the fields of building construction water supply system, air conditioner water supply system,etc. The double strand ppr pipe extrusion line speed can reach up to 35m/min*2=70m/min for 20x2.8mm. This line effectively improve the working efficiency, save human power and raw materials consumption. After do some modification, this line also can produce two layers hdpe pipe, very flexible.