LR SR Stainless Steel Elbow Fitting ASTM A815 UNS S31803 / S32205 / S32750 Introduction Stainless steel elbow fittings are critical components in piping systems, allowing for directional changes in the flow of liquids or gases. These fittings come in various types, including long radius (LR) and short radius (SR) elbows, and are made from