| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a compact water supply tank. SOLUTION: Pump connection cylinders integrated with a tank body 1 at the time of blow-molding the tank body 1 and formed by boring after the molding are provided on an entire periphery of the blow-molded tank body 1 in a plurality of zigzag arrays. A distance between peripheral sides of tip flanges 6 of the pump connection cylinders 4 is made smaller than an outer diameter of the tip flange 6 to downsize the water tank.</p> |
