? Prestressed plastic corrugated pipe is made of high density polyethylene (HDPE) plastic extruder through extrusion single wall corrugated pipe for post-tensioned concrete structure, as the tendon duct into the hole. In bridge and building construction is the ideal alternative to the existing corrugated metal pipe. Corrugated plastic pipe and flat tube pipe division into two categories, in actual use, to be supplemented by connecting all kinds of plastic fittings. Prestressed plastic corrugated pipe Features: 1, high strength prestressed corrugated plastic pipe, strong resistance, strong sealing without leakage. 2, prestressed corrugated plastic pipe ring stiffness strength, low friction, anti-aging, anti-electric corrosion and improve the antiseptic tendons. 3, prestressed plastic bellows fatigue resistance, good insulation properties, good flexibility, not easy to be broken rod chisel. 4, prestressed corrugated plastic pipe installation is simple and convenient construction