... , 316H, 317, 317L, 321, 321H, 347, 347H 1) ELBOW,8",90DEG.LR,SCH.STD,C.ST,NACE. QTY: 2 NOS ... CHEMICAL COMPOSITION, MECHANICAL PROPERTIES, PHYSICAL PROPRETIES, SPECIFICATIONS ETC SHALL BE FORWARDED FOR KNPC'S APPROVAL PRIOR TO DELIVERY. 1892) ELBOW,12",90 DEG.LR ... . DIMENSIONS AS PER ANSI B.16.9 MTC INCLUDING CHEMICAL COMPOSITION, MECHANICAL PROPERTIES, PHYSICAL PROPRETIES, SPECIFICATIONS ETC SHALL BE ...