SPR™ PE is a steel-reinforced plastic pipe liner with a smooth internal surface. A single strip of steel-reinforced HDPE profile is progressively wound into the existing pipeline by the SPR PE machine that is positioned in the base of the access chamber. The edges of the profile are welded together by the SPR PE machine, forming a continuous watertight liner. With this technology, a new pipe can be manufactured inside the host pipe with equipment that fits through a 22” manhole opening. SPR™ PE is the optimal solution for structural lining in closed system storm and sanitary sewers and culverts with limited access.

 

The liner is introduced into the host pipe at a fixed diameter, and annular space is subsequently grouted using a cellular or low strength cementitious grout. The plastic profile that forms the liner is reinforced with steel that is fully encapsulated within the HDPE material. The steel reinforcement is selected based on the individual project design requirements.