National Liner is a premium cured-in-place pipe (CIPP) trenchless rehabilitation system. The system consists of a polyester felt tube, which is saturated with a thermosetting resin.

All materials used by National Liner meet applicable ASTM standards and requirements for trenchless sewer pipeline rehabilitation. These include ASTM D-790 "Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials and ASTM D-638 "Test Methods for Live Load Coefficient".

For more complete information about the design and typical physical properties of National Liner please select from the More About CIPP options or Contact Us.