| 摘要 |
PROBLEM TO BE SOLVED: To produce a simple corrosion resistant steel preventing the corrosion of the steel to be used in contact with soil in the gas containing zones on the ground surface and in the soil such as underground fuel tanks, ground tank bottom plates, the foot parts of steel towers, the foundation in the soil of steel structure or the like and to provide a method for producing the same. SOLUTION: This corrosion resistant steel is obtd. by using a metal potentially baser than a steel as a base material and forming coating with 40 to 500μm thickness thereon. In this case, the center line average roughness (Ra) in the coating surface is regulated on 0.05 to 2. As the metal potentially baser than the steel, zinc, zinc-aluminum alloys, aluminum or the like are effective, and it is suitable that these metals are formed into the coating by thermal spraying. Thus, the life of the steel to be used in contact with soil in the gas containing zones on the ground surface and in the soil can remarkably be improved at a low cost and more easily than the case by the conventional method.
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