... corrugated pipe line Detailed Product Description single-wall corrugated pipe extrusion line,pvc/pe single-wall corrugated pipe extruder line,plastic corrugated ... corrugated pipe lineshall be used to produce small diameter single wall corrugated pipe in PVC, PP and PE raw ... 7mm are used in car. single-wall corrugated pipe extrusion line,pvc/pe single-wall corrugated pipe extruder line,plastic corrugated ...