Case Studies in Graphitic Corrosion of Cast Iron Pipe

Throughout many parts of the world, cast iron pipe has been and continues to be used for utility piping (water sewage) gaseous media piping. Gray is known have a limited life in service but often left place beyond its reasonable life. Therefore, end then defined as rupture or crack subsequent leak, at an unpleasant time with results. The controlling mechanism involved dependent graphitic corrosion. This paper provides review phenomenon corrosion form key characteristics. Several references are cited that further explore prevention/mitigation. Two case studies presented gray from failure analysis point-of-view. Both feature conditions aid interpretation appreciation when how this occurs.