CORROSION RESEARCH ROUND‐UP

FRANCE. Internal corrosion in pipes. Mild‐steel pipes as used in town gas distribution networks are corroded by the mixture of water vapour, carbon dioxide and oxygen. Corrosion occurs only if changes in temperature will cause condensation. The condensate forming on the metal is a heavily corroding agent. Once formed, the corrosion products will act as protective layers in certain circumstances.—(J. Morlet and G. Geoffray, paper read at the 74th Congress of the Association Technique de l'Industrie du Gaz en France, June 1957.)