| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring method for bend capable of exactly measuring the bend by measuring the distance to a rolled steel material during conveying even in the case where the surface of rolled steel to be measured has a swelled shape or recessed shape and even in the case where the rolled steel causes vertical vibration during conveying. SOLUTION: For measuring a bend by measuring the distance to the side surface 14 by distance meters 12b, 12a and 12c placed facing to the side surface during conveying rolled steel 10, the shapes of rectangular direction to the conveying direction of the rolled steel 10 at measuring points b, a and c are measured and recognized by using tools having two-dimensional scanner function as the distance meters 12b, 12a and 12c to obtain the bend by using the peak P of the shape.
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