Stainless steel (SS) flanges are essential, corrosion-resistant components used to connect pipes, valves, and pumps, primarily fabricated from high-strength chromium-nickel alloys. Commonly used in industries like oil, gas, chemical, and food processing, these flanges come in grades 304, 304L, 316, and 316L, adhering to standards such as ANSI, ASME, and DIN. Key Aspects of SS Flanges: Common Grades: 304 (versatile, cost-effective), 304L (superior weldability), 316 (molybdenum for enhanced corrosion resistance), and 310 (high-temperature resistance). Types: Popular types include Slip-on, Weld Neck (highest pressure handling), Blind (closing pipes), Socket Weld, and Plate flanges. Pressure & Size: Available in ratings from Class 150 to Class 2500, with sizes ranging from small bore (15NB) to large pipe diameters ($>$30 inches). Applications: Chemical processing, water pipelines, pharmaceutical equipment, and high-temperature petrochemical industries. Specifications: Commonly manufactured according to ASTM A182 for forged fittings.