FIELD: protection from corrosion. SUBSTANCE: metal surface protected from pitting corrosion has insulating layer of gas-permeable, heat-insulating material. Side of heat-insulating layer more cold in process of operation is found in close proximity to metal surface, and side of heat-insulating layer which is more heated is process of operation is heated by flow of gas containing carbon monoxide and additionally contains hydrogen and/or steam and has temperature from 300 to 1700 C. Located in zone between metal surface to be protected and hot side of insulating layer is catalyst for reaction of carbon monoxide with hydrogen and/or steam. EFFECT: simplified and economical protection of metal surface from pitting corrosion. 5 cl, 1 dwg, 1 ex
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