The pipe rehabilitation method 'SPR Method' for extending the lifespan of aging sewer pipes.

Rehabilitation of all types of pipes, such as circular, rectangular, and horseshoe-shaped, as a strong composite pipe integrated with existing pipes and rehabilitation pipe backfill material, while maintaining non-excavation and water flow!

The existing pipe is fitted with rigid PVC material in a spiral manner while manufacturing the rehabilitation pipe, and a special backfill material is filled in the gap between the existing pipe and the rehabilitation pipe. This revitalizes the old pipeline into a strong composite pipe that integrates the existing pipe and the backfill material of the rehabilitation pipe. 【Features】 ● The self-propelled pipe manufacturing method allows for the rehabilitation of various pipe shapes, including circular, rectangular, and horseshoe shapes. ● Construction can be carried out while allowing water flow, eliminating the need for temporary drainage within the main pipe. ● Non-excavation means there is minimal impact on traffic and social life. ● There are no restrictions on the pipe manufacturing distance, enabling long-distance pipe production. ● It can accommodate curved construction and can be installed with a slope. ● The flow capacity is equal to or greater than the design flow rate before rehabilitation. ● The rehabilitation pipe is excellent in durability, wear resistance, and chemical resistance. ● Seismic retrofitting of pipeline facilities is possible. ● Work can be suspended even during pipe manufacturing in the event of sudden heavy rainfall. 【Applications】 ● Reconstruction and extension of the lifespan of aging or damaged sewer pipes (Ø250 to 5000) ● Strength restoration ● Improvement of water tightness against inflow, flowability, corrosion resistance, prevention of tree root intrusion, and seismic resistance enhancement ● Setting of pipe slope (rehabilitation pipe Ø800mm and above)

Sewerage facilities