Asahitec PP-RCT piping systems for plumbing and HVAC applications are said to have greater pressure capabilities at higher temperatures than conventional PP materials. Systems include Climatec for hydronic heating applications and Watertec for potable water. Each use Fibercore technology, said to minimize expansion and contraction as much as 75%. Fibercore pipe consists of three co-extruded layers that make one homogenous pipe. The middle layer is a mix of short fiberglass strands and PP-RCT, which is isolated by an inner and outer layer of solid PP-RCT. A range of fittings is available.