Get current pricing for Carbone, Carbone 55 Sq. Ft. B Carbone Usa Corp.k55/55, 55 Sq. Ft. (5.33 M2) Cubic Block Graphilor Heat Exchanger. Design Pressure 75/75 @ 350 Degrees F. Carbone S/o 36218. . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: