Inclined three-way pipe and inclined four-way pipe are often used in drainage system. Compared with general three-way four-way, it means that the angle between branch pipe and main pipe is inclined, like "bu" shape.
The inclined tee is that two intersecting pipelines have an acute angle between them, which is relative to the downstream tee. The oblique tee is divided into 90 degree oblique tee and 45 degree oblique tee according to the medium flow direction.
The oblique tee is used to connect the branch pipe and the main pipe vertically. However, the connection of the branch pipe into the main pipe is not vertically intersecting, but is connected with a small arc along the flow direction of the water, so that the water of the branch pipe flows smoothly to the main pipe.
