| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a drain collecting pipe comprising a lateral branch pipe part jointed with a vertical pipe part without a rotary blade for improving draining performance, and having a structure capable of achieving equal or higher draining performance to the pipe provided with rotary blade. SOLUTION: Inside the vertical pipe part 10, an eaves part 13 to partially cover an upper part of a jointed opening part 12 by the lateral branch pipe part 11 is provided, thereby sufficient drain performance can be achieved.</p> |
