OREANDA-NEWS. ZAO Chelnyvodokanal, KAMAZ’s subsidiary, mastered a new process for rehabilitation of large diameter sewer lines with the application of an innovation spiral wound technology.

The method is unique because pipelines can be renovated through wells without site excavation and service interruption. This is a fast and environmentally friendly process, which is an advantage of the technology. The method new for Russia has been used in Europe for already ten years. It is feasible in densely built-up areas, centers with buildings of high historical value, and it retains existing landscapes and preserves historic sites.

The spiral wound technology is based on the principle of a manageable polyethylene profile strip which forms a new pipe in a host pipeline with the help of a special winding machine.