... 310H, 316, 316H, 317, 317L, 321, 321H, 347, 347H 1) ELBOW,8",90DEG.LR,SCH.STD,C.ST,NACE. QTY: 2 ... NOS., ELBOW, 90 DEG, LONG RADISU, BUTT WELD, 8" X SCH. ... 234 Gr. WPB, SEAMLESS, CONFIRM TO NACE MR-01-75. DIMENSIONS AS PER ANSI B.16.9. MTC INCLUDING CHEMICAL COMPOSITION ... BE FORWARDED FOR KNPC'S APPROVAL PRIOR TO DELIVERY. 1892) ELBOW,12",90 DEG.LR,SCH.STD,C.ST,NACE. QTY ...