FIELD: transportation.
SUBSTANCE: steel pipeline for fuel transportation is characterized in that a nickel-coated layer 4 is formed on the inner material surface of the steel pipeline base 11, wherein the nickel-coated layer consists of a mutually diffusion layer 4a comprising a base material and nickel, and a non-mutually diffusion layer 4b comprising only nickel formed on the outermost surface of the diffusion layer 4a. The thickness of the non-mutually diffusion layer 4b is 3 mcm or more, and the total thickness of the mutually diffusion layer 4a and the non-mutually diffusion layer 4b is 10-25 mcm.
EFFECT: high resistance to aggressive fuel and retentivity and carrying out the processing after applying the coating.
2 cl, 3 dwg, 2 tbl
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