Get current pricing for Carbone, Carbone 59 Sq. Ft. B 58.87 Sq. Ft. Vertical Graphite Cylindrical Block Heat Exchanger. Mfd By Carbone, Type Pbc8dl-5pu-1-6, Serial # 1119, Built 1998. Asme Code Stamped, N . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: