Approved and certified by SAI Global and SGS for gas distribution, Rifeng gas piping system consists of Rifeng multiplayer pipes, brass fittings, Valves & Flexible Hoses. Today’s stringent technical standards for gas distribution in residential and commercial buildings, makes Multilayer Gas Piping System a natural choice. The middle aluminum layer assures no gas permeability. In outdoors installations, the pipes’ resistance to rupture and other technical properties permit the use of innovative techniques such as “no sand and no dig” installations.