| 摘要 |
PROBLEM TO BE SOLVED: To produce a zinc phosphate treated galvanized steel sheet which can secure sufficient white rust resistance and dew condensation unevenness resistance without requiring sealing chromate treatment, and has high whiteness and the uniformity of a color tone as well. SOLUTION: The galvanized steel sheet has a zinc phosphate film. The zinc phosphate film contains >=2% Mg and 0.01 to 1% of one or more kinds of elements selected from Ni, Co and Cu, and whose coating weight is >=0.7 g/m<2> . |
