... Heat Exchanger Tubes: copper, copper-nickel, steel, and stainless steel Casing: aluminum, steel, galvanized steel, etc. Finned Heat ExchangerGeneral Description: • Finned heat ... and function:: 1. Finned heat exchangers basically consist of core tubes with drawn or pressed on fins ... material combination are possible (special material on request):Tubes copper, copper-nickel, steel, and stainless steel ...