| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensively and easily manufacturable pump casing capable of enhancing efficiency of a pump. SOLUTION: The base end of a delivery nozzle part 92 of a delivery body 9 by integrally molding the delivery nozzle part 92 and a delivery flange part 91 is connected to a volute end part of a casing body 1 being made of sheet metal and having a volute part inside.
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