... ASTM / ASME SA 403 GR WP "S" / "W" /"WX" 304, 304L, 304H, 304N, 304LN, 309, 310H, 316, 316H, 317, 317L, 321 ... ",90DEG.LR,SCH.STD,C.ST,NACE. QTY: 2 NOS., ELBOW, 90 DEG, LONG RADISU, BUTT WELD, 8" X SCH. STD ... BE FORWARDED FOR KNPC'S APPROVAL PRIOR TO DELIVERY. 1892) ELBOW,12",90 DEG.LR,SCH.STD,C.ST,NACE. QTY: 9 ... NOS., 520ELBOW, 90 DEG, LONG RADISU, BUTT WELD, 12" X SCH. STD ...