What is 1.5 D in elbow?

Category: 1D 1.5D 3D 5D Elbow

1.5 D in elbow refers to an elbow with a bending radius of 1.5 times the nominal diameter of the pipe it is being connected to. For example, a 1.5 D elbow for a 4-inch pipe would have a bending radius of 6 inches.