SPR winding process

SPR™ is a spiral-wound trenchless pipeline renewal process designed for use in large diameter pipelines, typically peron entry (800 mm or larger). SPR™ utilizes steel reinforced interlocking PVC profile strips grouted in place with a high compressive strengths grout. The installation equipment can be utilized via standard access points without site excavation. SPR™ can also be installed in vertical applications such as wet wells, access shafts and other large diameter structures.

The SPR™ process is unique as it can provide a customized structural solution to aging pipelines. It can be engineered to correct hydraulic anomalies as well as restore the slope of the original pipe.

The interlocking edges of the profile create an impermeable mechanical lock that can withstand strong deformational forces. SPR™ PVC profi le have a Mannings n of 0.01. SPR™ liners have been tested in accordance with industry standards and meet or exceed the standards for Spiral-wound PVC Profi le Wall Liners ASTM F – 1697-02 and F 1741-02a.