SPR™ TF is a trenchless spiral wound technology for rehabilitating sewers, storm drains and culverts between 32" - 72" in diameter. The system consists of a single strip of PVC profile which is progressively wound into the existing pipeline by the SPR™ TF machine. The winding machine traverses the pipeline while tightly fitting the profile against the host pipe wall. The edges of the profile are interlocked by the SPR™ TF machine as it moves inside the deteriorated pipeline, forming a continuous watertight liner.
The benefits of SPR™ TF at a glance: