... :ANSI B16.9,ASTM,JIS Material:304/304L,316/316L,321ect. 1)Product: Stainless steel 90 elbow, Butt Welding fitting2) Size: Seamless ... B2311,2312,2313;DIN2605,2615,2616,2617 etc.5) Material: 304, 304L, 316, 316L, 316Ti, 317, 317L, 321, 321H,304H,347H ... ,904L,UNS S31803,310S, 6) Our stainless steel elbow are corrosion and high-temperature resistant. stainless steel 90 ...