Single Walled Corrugated Pipes are being used as Sheathing Ducts for internal bonding in post tensioning of tendons in Prestressed concrete in projects such as bridges, flyovers, offshore platforms, Via ducts, tunnels, underpasses etc. Corrosion is a great threat to the reinforced concrete structure. The metallic sheathing ducts in spite of galvanizing invariably gets corroded in few days. In most of the seminars and workshop, the experts have already confirmed this and deliver endless speeches on corrosion threat.