... motor 4.Test before delive single screw extruder for PPR plastic pipe Model SJ45/30 SJ65/33 SJ75/33 SJ90/33 SJ120 ... service life.Equipped with different mold and auxiliary equipments,it could produce plastic pipe,sheet,board granules and so on.(3) It has features ... of simple process,high output,stable extrusion presure,and low ...