Cure In Place Pipes(CIPP)
A cured-in-place pipe (CIPP) is a trenchless rehabilitation method used to repair existing pipeline.
CIPP method is inserting a flexible liner inside the existing pipe, inflating the liner, and exposing it ultraviolet light to dry and harden the liner inside the pipe. The liner essentially forms a smooth surface inside the existing pipe, that design to resist all forces like new pipe.