Top Secret! Odd-Shaped Pipe Lining Trick Revealed

Spiral-wound pipe rehabilitation offers trenchless repair of sanitary sewer, combined sewer and stormwater lines without curing.Sekisui SPR Americas, LLC, headquartered in Atlanta, Ga., is currently the only company offering the machine-wound spiral technology. A single panel of either polyvinyl chloride (PVC) with interlocking edges, or extrusion-welded high-density polyethylene (HDPE), is re-enforced by encapsulated steel.During repairs, the damaged section of the pipe is camera-inspected and cleaned.A hydraulic winding machine is then lowered into the manhole, and panel material is fed into the winder from an 8-foot-diameter spool on the surface. As material exits the winder, it forms a spiral, either by