Get current pricing for Hughes, 5,518 Sq Ft AL-6XN H 5518 Square Feet Horizontal Alloy Shell & Tube Heat Exchanger. Cs Shell Rated 1270 Psi @ 400 Deg F. Al-6xn Tubes Rated 142 Psi @ 150 Deg. F. Shel . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: