| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily manufacturable tank equipped with partitioning plate capable of preventing the partitioning plate from being welded to a split piece in a dislocated condition at the time of welding and precluding the plate from warping at welding. SOLUTION: For increasing the rigidity, a partitioning plate 8 is furnished with a first reinforcing rib 24, which is fitted to a first split piece 9 and whose peripheral surface 24a is solely attached tightly to the first split piece 9, and the partitioning plate 8 is located with respect to the first split piece 9. The welded parts 17 and 21 of the first split piece 9 and plate 8 are positioned mating with the welded part of a second split piece 10, and they 9, 10, 8 are welded together simultaneously. Because the first split piece 9 makes location of the plate 8, the plate 8 is prevented from being dislocated relative to the first split piece 9 resulting from the vibration at the time of welding. Because the first reinforcing rib 24 increases also the rigidity of the plate 8 itself, the plate 8 is precluded from warping at welding.
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