Get current pricing for Ras Process Equipment, RAS 595 Sq. Ft. Shel Used Approximately 595 Square Foot Ras Hastelloy C276 Heat Exchanger. (258) 3/4 Hastelloy Tubes Rated 75 Psi @ 340 Deg F. 24 Od X 11', 9 Long 31 . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: