PPR pipe extrusion line: pipe extrusion machines, plastic pipe extrusion machine, pipe extrusion line, plastic pipe producing machinery, plastic pipe extrusion production line, PPR plastic pipe equipment, pipe extrusion machinery PPR pipe extrusion line: 1. Special single screw extruder for polyolefin, having high extruding velocity and effective plasticization. 2. Separation mixing screw specialized for polyolefin. 3. Specially designed three co-extruding die, reasonable channel, smooth outside and inside wall, and little internal stress. 4. Producing pipe limit 20-160mm, manufacture velocity up to 16 m/min. 5. Be used to produce HDPE silicon core tube, ordinary PP-R, PE and PEX pipes. 6. Low cost: The cost of nanometer & anti-virus pipe is merely increase 5-10% on the ordinary pipe basis.