The main difference between the elbow and carbon steel elbow is the material; the chemical composition it contains will keep the elbow surface from rusting and corroding for a long time.

In piping systems, elbows are pipe fittings used to change the direction of the pipeline. Commonly, there are three angles available: 45°, 90°, and 180°. Additionally, elbows with other non-standard angles, such as 60°, are included according to engineering requirements.