The gas connection into my new house (less than a year old) was heavily painted but the paint is peeling revealing rusted and pitted pipe, especially the elbow pipe. Also, the gas pipe connection for a gas barbeque is not painted and is very rusted and pitted. What should I do about this? Should I contact the builder and require a replacement of the rusted pipes?
Gas pipe is usually ductile iron pipe, not galvanized, because the galvanizing can flake off and clog gas fittings. So not being protected with the zinc coating, it rusts. It will likely take decades to become rusted through enough to become a problem however and as mentioned, a simple wire brush cleaning and new paint will prolong its life greatly.