| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a drain pipe member capable of improving draining performance without arranging a projection such as a turning blade. SOLUTION: In this drain pipe member for joining a horizontal branch pipe part 8 to a vertical pipe part 7, a recessed groove 9 having the depth becoming deep toward the vertical pipe part 7 along a drain flow is formed in a horizontal directional central part orthogonal to the pipe axis of the horizontal branch pipe part 8 in a bottom surface part of the horizontal branch pipe part 8.</p> |
