| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a railroad rail with stabilized and improved corrosion resistance and electric corrosion resistance, in the railroad rail to be laid in an undersea tunnel, along a beach or in a connection track crossing or the like. <P>SOLUTION: On an upper surface 4A and lower surface 4B of a bottom part 4, a spray coating film 2 comprising zinc and aluminum in the volume ratio of 40:60 to 50:50 is coated and formed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
