Metal channeling DIREXIONAL

for drainage systems

Trenchless pipe laying techniques With the growth of urbanisation, demography and the scarcity of drinking water, project managers have to preserve our natural resources by ensuring that water is transported with the highest possible regard for sanitary conditions and environmental criteria. Trenchless pipe laying is a modern piping technique that addresses these concerns. Thanks to the exceptional mechanical qualities, anchored joints and special coatings, Saint-Gobain PAM's ductile iron products and systems are ideal for trenchless pipe laying. As an alternative to the traditional method of laying in trenches, these techniques of micro tunneling, pipe bursting or pulling through a casing are ideal for locations where conventional methods of implementation would be difficult, if not impossible. For example, crossing through dense urban areas, rivers, canals, factories, railway lines, roads, and unstable terrain. When pipes are being laid, the nuisance caused to citizens through the slowing down of road and pedestrian traffic, diversion of traffic, noise and disturbance of local commercial activity has to be limited as much as possible. Trenchless pipe laying techniques keep the social costs of a project to a minimum. Pipe laying by micro tunneling The curved trajectory of micro tunneling makes it possible to pass a pipe under obstacles starting from ground level. This technique involves three distinct steps: Creation of a pilot hole using a drilling machine guided from the exterior; Boring of the pilot hole; and Pipe assembly and pulling of the string of anchored pipes from the downstream well towards the upstream, using the drilling machine.