Seamless Carbon Steel Elbow Fittings Per Degree: 22.5 degree carbon steel elbow, 30 degree carbon steel elbow, 45 degree carbon steel elbow, 60 degree carbon steel elbow, 90 degree carbon steel elbow, 180 degree carbon steel elbow. Per standard: ANSI B16.47 carbon steel elbow. JIS carbon steel elbow, DIN carbon steel elbow, ISO carbon steel elbow, GOST carbon steel elbow . Per Thickness: SCH10/STD ...