G and K Insulation Pre Insulated Pipe system is a factory fabricated for below and above ground distribution of hot or chilled water / gas / petroleum products and other substances. The system is designed with heavy duty carrier pipe made of Steel / PVC / HDPE, Polyurethane Foam Insulation and a sleeve made of HDPE (High Density Polyethylene) as a jacket. Pipe in pipe insulation also available in spiral duct cladding.