What Does Lining With Close-Fit Pipes Mean?
Lining with close-fit pipes is a method of pipelining where the outer diameter of the inserted pipe is a close fit with the inner diameter of the host pipe.
It is a form of sliplining that involves a continuous pipe that is pushed or pulled until it extends from one end to the other. Sliplining is used in trenchless rehabilitation to extend the life of older pipes that have become defective over time.
Trenchlesspedia Explains Lining With Close-Fit Pipes
One method for rehabilitation of a defective pipe is to use a lining with close-fit pipes. It is made possible because of the “memory” properties of thermoplastic materials. These materials will change shape when compression or tension is applied, but will return to the original shape when the external force is removed.
Thermosplastic pipe is versatile and used widely in the trenchless construction industry. It is useful for the rehabilitation of pipes that are relatively straight with minimal bends.