The main difference between stainless steel elbows and carbon steel elbows is the material. The chemical composition contained in the stainless steel elbows will keep the surface of the elbows from rusting and corroding for a long time. In the piping system, the elbow is a pipe fitting that changes the direction of the pipe. According to the angle, there are three most commonly used elbows: 45°, 90°, and 180°. In addition, according to the needs of the project, there are also other non-normal angle elbows such as 60°.