| 摘要 |
The present invention relates to an elbow pipe for angle adjustment including a first metallic pipe for rainwater inflow, a second metallic pipe for rainwater discharge guide that is parallel to a central axis of the first metallic pipe, a central axis of the second metallic pipe being arranged out of linear alignment from the central axis of the first metallic pipe, and a bent metallic connection pipe for connection between the first metallic pipe and the second metallic pipe. The connection pipe is formed for a joint side central axis of the first metallic pipe and a joint side central axis of the second metallic pipe to form an obtuse angle. According to the present invention, a wastewater inflow side central axis and a wastewater discharge side central axis of the connection pipe are formed with a curvature to form an obtuse angle, unlike in the related art, thus wastewater can be prevented from remaining. The connection pipe is manufactured by rolling a plate material, thus the manufacturing can be facilitated compared to previous methods of two-pipe butt welding. When a plurality of the connection pipes are provided, an angle between one of the connection pipes and the other one of the connection pipes can be adjusted with ease. |
