... JWSB series of large-diameter HDPE / PVC double wall corrugated pipe, reinforced pipe extrusion line; Large Diameter HDPE Water Supply & Gas Supply ... ; PP-R, PEX new type of water pipe extrusion line; PVC Wood-Plastic blend foam profile, plate and wide door panel ... way, two-way stretch geogrid Extrusion Line; all kinds of plastic extrusion machines, screw, barrel, chemical fiber coil head, POY, FDY High ...