| 摘要 |
A drainpipe of a rainwater drainer for a bridge or an overpass is provided to drain rainwater effectively by forming a screw part at a swelled portion of an adaptor to swirl rain water. A drainpipe of a rainwater drainer for a bridge or an overpass comprises clamp housings(150), no-stop couplings(110), elbows(120), tees(130), and adaptors(140). The no-stop couplings are connected with a connection pipe of a water collecting unit and also connected with each other via the clamp housings. The adaptors connect the no-stop couplings with the tees and the elbows without fastening members such as rivets. The adaptor is provided with a swelled portion(141) having a screw face. The swelled portion with the screw face swirls rainwater to drain rainwater effectively. |
