Get current pricing for Ohmstede, 730 Sq. Ft. Horizont 730 Sq Ft Horizontal 304l-ss Heat Exchanger. 304l-ss Shell Rated 225 Psi @ 300 Deg F. 304l-ss Tubes Rated 150 Psi @ 150 Deg. F. Shell: 16 Od X 2 . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: