Get current pricing for Carbone, 94 Sq. Ft. Carbone B 94 Sq. Ft. Vertical Cylindrical Graphite Block Heat Exchanger. Mfd By Carbone Type Pbc8dl-8pu-1-3. Serial # 11122, Built 1998, Nb# 1291. Asme Cod . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: