PURPOSE: To prevent the vessel from being deformed even when centrifugal force is operated by forming a bend reinforced part protruded inside the vessel continuously in a ring shape near an upper peripheral edge.

CONSTITUTION: A main body 10 of the vessel is composed of stainless and near the upper peripheral edge, a bend reinforced part 11, of which the cross-section is U-shaped, protruded inside the vessel continuously in the ring shape is provided by press molding. In the state of placing a balance ring 15 on an upper horizontal part 13 of the bend reinforced part 11, the lower end face of its fixed boss 18 is fixed by a fixing screw 20. Thus, since the washing and dehydrating vessel is provided with the bend reinforced part 11, when centrifugal force is operated, the upper part of the vessel is not expanded outside and further, since that bend reinforced part 11 is also vertically fixed by utilizing the fixed structure of the balance ring 15, the vessel is prevented from being extended upward as well.