C.R.I. uPVC pipes are specially designed for submersible pumps and are capable of handling both internal hydrostatic pressure as well as high tensile load caused by the pump weight, cable weight & column water pressure & weight. PBTS (Polymer Bond Thread Sink) locking system is provided to avoid the loosening of coupler during the removal of pipes. A special polymer is injected into the threads via the coupler. The polymer forms a permanent bond between the coupler and pipe, thus nullifying any possibility of coupler loosening. Special rubber seal is provided at the end of the threads to ensure 100% leak proof joints even at high pressure. These pipes come in 3m standard length and are of light weight ensuring easy handling, storage & installation.