GF URECON pre- insulated pipe. Urecon’s U.I.P insulation technology is one piece, factory applied in a controlled environment. insulated, pre-insulated pipe utilizes a Polyethylene Jacket designed for above or below ground applications. Pipe freeze protection systems, Urecon heat tracing systems involving plastic pipe involve a Constant wattage cable system and thermostat control to only turn on when required.