... Product Description pipe extrusion lineFeature: pp-r pipe extrusion line1.This single cod extruder for polyolefin, having high extruding velocity and effective plasticization. ... die, reasonable channel, smooth outside and inside wall, and little internal stress. 4.Producing pipe limitΦ16-Φ160mm,manufacture velocity ... HDPE silicon core tube, ordinary PP-R, PE and PEX pipes. pipe extrusion line,