| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a coated steel sheet which has excellent bright appearance and a base color, ability to make its surface flaws invisible even if the total film thickness of an undercoat and a topcoat is as thin as 10 μm or smaller and favorable anti-corrosivity without a zinc-based plating layer, a processed product of the same, and a method for manufacturing the coated steel sheet. Ž<P>SOLUTION: The coated steel sheet is obtained by forming chromium-free chemical conversion coatings on both sides of a bare steel sheet 2 acid-cleaned with an aqueous nitric acid solution, forming an undercoating film 3 containing a colored pigment at least at one side of the chemical conversion coatings of the steel sheet, and having on the undercoating film 3 a topcoat film 4 which is an organic resin film containing a metallic pigment 5. The total film thickness of the undercoat 3 and the topcoat 4 is 10 μm or smaller. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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