58 sq.ft. 316-SS Heat Exchanger, by Celanese Chemical, S/N: H-4285-D. U-Tube. (12) – 1" dia x 9’ long 316SS tubes, rated 1000 PSI @ 500°F. 8" dia. 316SS shell, rated 1000 PSI @ 500°F. Shell-1 pass, Tubes-4 pass, Horizontal. 8" Shell Dia, OAL: 11’. Shell nozzles: (1) 6â€, (1) 4â€; Tube Nozzles: (2) 2â€. Drawing on file.