SL180 double wall corrugated pipe extrusion line produces OD40mm – OD180mm single and double walled corrugated pipes, corrugated pipe machine achieves high production speed with horizontal structure, water cooling and extrusion technology. The dwc corrugated pipe machine use 4th generation water cooling technology, all the mould blocks have cooling water inside for recycling, cooling efficiency is good, corrugated pipe production speed is high.