Stainless Steel 316/316L Butt-Weld Pipe Fitting, Short Radius 90 Degree Elbow, Schedule 10, 4" Pipe Size Short radius 90-degree elbow for changing flow direction Butt-weld connections on both ends for welding pipes together Made of stainless steel 316/316L for strength and ease in welding Welded connections for creating tight seals, reducing the possibility of leakage Low-carbon content minimizes harmful carbide precipitation during welding