CIPP Lining

Creating a New Pipe Within the Old One

CIPP Pipeline Rehabilitation Offers Efficiency and Safety

Pro-Pipe, a leading CIPP lining contractor, offers the Cured-in-Place-Pipe (CIPP) technique for the trenchless rehabilitation of municipal and industrial wastewater and stormwater pipelines. This no-digging technology involves placing a special liner in damaged or broken sewer pipe, effectively creating a new pipe within the old one. CIPP pipe repair, or “pipe-in-pipe relining,” uses a textile liner tube and a liquid resin to reline the damaged pipe.

CIPP Lining Process for Mainline Pipes

After cleaning the pipe and removing all debris, roots and corrosion byproducts, the CIPP lining company impregnates a flexible liner with a two-component resin system and places it inside the deteriorated pipe through existing manholes or access points. The impregnated liner is inverted by means of hydrostatic water column and cured by circulation of hot water, or inverted by means of air pressure and cured by controlled steam.

A new pipe is formed as the liner cures and hardens within the host pipe. Inspection and testing are performed to make sure the “new” pipe performs as expected, assuming all functions of the host pipe. The pipe-in-pipe solution is solely sustainable. Further, the “new” pipe bears all external loads without the support of the host pipe, providing a complete, structural solution.

CIPP Pipe Lining Process for Lateral Pipes

The MaxLiner™ system provides cost-effective rehabilitation of small-diameter pipes in industrial, commercial and residential areas. The MaxLiner™ system is an inversion system that allows you to repair pipes by relining them, as opposed to replacing them.

The existing pipe is cleaned and lined with a pre-cut, pre-measured felt liner. The liner is saturated in resin, inserted into the existing pipe, inflated and then cured to harden, taking the shape of the host pipe. The result is a fully rehabilitated reach.

Selecting Materials for CIPP Pipe Lining

A custom-designed liner tube is impregnated with epoxy and, based on the existing conditions, then inverted or pulled into the existing pipe. The liner materials are selected depending on the pipe condition. Standard liner tubes are used for straight pipes and more flexible tubes are used for pipes with severe bends, angles and transitions from smaller to larger diameters.

Resins are selected according to the job requirements and based on the inversion table. Once the resins are selected, the curing process can be done at ambient temperatures or by adding heat, which allows the curing process to be shortened to one hour.

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