SPR™ Spiral Wound Lining

32″ – 200″+ Pipe Lining

Round & Non-Round Shapes

100% Trenchless

SPR™ PVC Liner

32" - 200"+ Pipe Lining

Round & Non-Round

100% Trenchless

The Large & Non-Round Liner

SPR™ is a Spiral Wound pipe lining method for large diameter sewers, storm drains and culverts. SPR™ lines both round and non-round shapes, providing fully structural rehabilitation.

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.

SPR™ Trenchless Lining Process

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The Large & Non-Round Liner

SPR™ lining occurs along a guide-frame constructed to mirror the pipeline’s shape. These shapes can be anything from a box, horseshoe, teardrop, arch etc. The SPR™ machine traverses the pipe while pulling PVC profile along to construct the trenchless pipe liner.

Once winding is completed, grout (either structural/non-structural) is introduced between the liner and host pipe. Grouting occurs in lifts through ports installed within the liner. Once grouting is finished, the end result is a fully structural rehabilitated pipe.

Sewer Pipe Lining

Storm Drain Lining

Culvert Lining

SPR™ Lining Process

Once winding is completed, grout is introduced between the liner and host pipe. Grouting occurs in lifts through a series of ports installed within the liner. Once grouting is finished, the end result is a fully structural rehabilitated pipe.