Along with elbows, carbon steel pipe fittings likewise consist of tees, which link three areas of pipe, developing junctions for liquid circulation. Equal tees are used when the connecting branches are of the exact same size, while reducing tees are used when the branch pipe is of a smaller diameter. https://blogfreely.net/cheeseturret14/understanding-5d-bends-and-their-role-in-efficient-pipeline-design