2026-06-16 This article provides a complete guide to ASME B16.9 stainless steel butt-weld elbows. It covers 45 deg, 90 deg, and 180 deg elbows, long radius (LR) and short radius (SR) types, and common materials including 304/304L, 316/316L, 321, 310S, and duplex stainless steels. Learn about their key features – corrosion resistance, high strength, and hygienic surfaces – and their wide applications in oil & gas, chemical, food, pharmaceutical, and power industries.