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
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 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.

Trenchless Lining Methods
3 Spiral Wound installation methods based upon pipe diameter
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