Spiral Wound Lining Process

3 Spiral Wound installation methods based upon pipe diameter

small-diameter sewers, storm drains, and culverts. It does not require annular space grouting.

The PVC profile is wound directly into the host pipe by the hydraulic winding machine in the access chamber.

a structural lining solution that can be designed for fully deteriorated pipes capable of withstanding all applied loads. The PVC profile is wound directly into the host pipe. The hydraulic winding machine is lowered into the access chamber.

The process begins by feeding a PVC strip into the winding machine. The pipe liner is constructed and pushed towards the upstream manhole. Once the liner reaches the termination manhole or structure, the liner is restrained, then expanded creating a tight fit liner. 

trenchless pipeline rehabilitation method for mid-range diameter sewers, storm drains, and culverts that does not require annular space grouting.

This method uses two different winding machines that traverse the pipeline while constructing a tight-fit liner.

The trenchless pipe lining process begins by feeding PVC profile from an above ground spool directly into the host pipe. SPR™TF traverses the length of a deteriorated pipeline while pulling profile to construct the PVC liner. Wraps of PVC are locked together as the winding machine continues down the pipeline.

The machine ‘lays’ profile directly against the pipe wall, resulting in no space between liner and pipe. Since the profile is installed directly against the pipe wall, no annular space grouting is required. The fully structural pipe rehabilitation process is complete once the liner reaches the far end manhole and the ends are sealed. 

repair large round and non-round sewers, storm drains, and culverts.

The PVC profile is wound into the pipe by a traverse winding machine, and then grout fills the annular space.

The PVC profile strip is wound into the pipe by a traverse winding machine. The machine travels the length of the pipeline while constructing the liner at a fixed diameter. Grout is then introduced to fill the annular space; either part of the structural liner or just as a gap filler to uniformly transfer loads onto the liner. Grout type depends upon dimensions of the pipe and overall project conditions.