Center to center of welds is used to locate miters on what component?

• A. Flanged joint
• B. Welded elbow
• C. Butt joint
• D. Corner joint

Answer: (B)

Center-to-center of welds provides a circular reference around the pipe to place the bevel cuts (miters) so the two pieces assemble into the desired elbow. By locating weld centers evenly around the circumference, you can align the beveled ends so that, when welded, the pipe segments meet with the correct orientation and radius. This approach is specific to a welded elbow, where the joint geometry depends on how the ends are beveled to meet in a bend. Flanged joints rely on flanges and bolts, butt joints are straight-end connections, and corner joints meet at a corner rather than forming a curved bend, so center-to-center weld measurements aren’t the method used there.