... /SR elbows, 180° returns, straight, reducing tees, caps, concentric and eccentric reducersRadius Of Curvature1D-10D Elbow, ANSI,ASME, ... and otherCertificatesISO-9001/2000,API,PEDQualityHigh LeverSpecial steel elbow design available as requirement! NAME:90 DEGREE BUTT ... gas, metallurgy, shipbuilding, construction, etc. NAME:180 DEGREE BUTT-WELDED STEEL ELBOW FOR PIPES MATERIL:A234-WPB.A420-WPL6.A234 ...