Carbon Steel Elbow is the pipe fittings to change the direction of pipe.Divided by the angle, 45° and 90°180° are three of the most commonly used,according to the project needs to include 60° and other non-normal angle elbow.Elbow materials cast iron, stainless steel, carbon steel, alloy steels, malleable cast iron, non-ferrous metals and plastics.The way to connect with the pipe : direct welding (the most commonly used way) flange connection, hot melt connection, fused connection, threaded connection and socket connection