With the opportunity to manufacture non-circular profiles on an industrial scale, the way was paved for HOBAS for new fields. For the renovation and building of non-circular sewers, HOBAS offers a GRP Product called “HOBAS NC Line” (non circular). These are special profiles produced by filament winding whose shape (in the case of renovation) can be perfectly matched to the dimensions of the existing sewer or, in case of a new construction, allow for adjustments to every desired profile form.