| 摘要 |
The present invention provides a slip stopper which achieves a great slip stopping effect, and can be used for a location where a problem occurs if a through hole is opened therein. In a protruding portion 7 that protrudes from the upper surface 5a of a steel plate 5 in the plate thickness direction, a concave portion 8 and drain channels 9 that leads to the steel plate upper surface 5a from this concave portion 8 are formed, and the inner surface of the concave portion 8 and the groove side surfaces of drain channels 9 are formed by shear planes 8a, 9a which face almost perpendicularly to the steel plate upper surface 5a, and are obtained by half blanking that does not open a through hole in the steel plate 5.
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