For more than 50 years, we have been installing cured-in-place pipe (CIPP) products for pipeline rehabilitation. Building on this experience, we developed the InsituMain® CIPP system, an AWWA Class IV, fully structural and pressure-rated CIPP technology. The InsituMain® CIPP system is certified to meet the NSF/ANSI Standard 61*. 

The InsituMain® CIPP system is ideal for force mains and water pipelines up to 96 inches in diameter and it can negotiate bends and is pressure-rated at 80+ psi. It is suitable for rehabilitation in a variety of host pipes, including cast iron, ductile iron, steel, asbestos cement, reinforced concrete pipe, and thermoplastic.

Engineered to restore existing pipelines, the InsituMain® CIPP system withstands internal pressure and external load requirements while also eliminating leakage and corrosion. Composed of an epoxy composite layer reinforced with glass materials and/or polyester fiber, the InsituMain® CIPP tube provides added strength and stiffness to pressurized pipelines. A polypropylene layer on the inside of the pipe surface increases the pipe's smoothness, reduces surface friction and provides an additional corrosion barrier for the pipe.