F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F28 HEAT EXCHANGE IN GENERAL
F28F DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
F28F9/00 Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
F28F9/26 Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators