A shell and tube exchanger will be used to preheat light crude oil to a temp of 70 F (during the wnter months in Canada), prior to the refinery unit. Crude oil will be flowing in the tube side of the exchanger; with 50 psig steam condensing in the shell. It has been estimated that the tube skin average temperature can be as high as 215F. Due to the salt contents in the crude (up to 90 ppm wt) can you please advise the suitability of using 316L tubes/tube sheets? The rationale for using the SS tubes was due to the potential of wet hydrogen sulfite present in the crude, as well as the ability to design a higher tube side velocity (8.5 -9 ft/s), from a better heat transfer stand point. The exchanger in question is a AES designate with removable tube bundle and internal floating head. you kind advise is greatly appreciated. Richard