With advances in technology in modern day Telecommunications, over a period of time, it became very important to upgrade the HDPE pipes to be used particularly for Telecom applications. The Optical Fibre Cables used for Telecommunications being very delicate and sensitive, it became necessary to modify the HDPE Pipes to be used as conduits for optical fibre cables. This led to the development of Permanently Lubricated (PLB) HDPE Ducts. It has high impact strength with excellent Flexibility.