| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of a space in a joint part when two plates having flanges formed by bonding the plate are joined with each other. SOLUTION: The plate 50 has the flange 52b formed by bonding the plate, the flange 52c that is substantially orthogonal to the flange 52b and is formed by bending the plate, and a recessed part other than a flange between them. The plate 60 has the flange 62c formed by bending the plate, and a projecting part projecting than a side 62b parallel with the flange 62c at the longitudinal end of the flange 62c and near the end. The longitudinal end of the flange 52c is butted on the longitudinal end of the flange 62c, the end of the plate 60 is butted on the outside of a circular arc part from the plate 50 to the flange 52b, and the projecting part is inserted into and butted on the recessed part, and the respective butted parts are welded. |
