The heat exchangers’ galvanized steel side rails and tube sheets offer strength and corrosion resistance. The copper tubes are compatible with water, EGW, and other common cooling fluids.Galvanized side plates provide superior strength and are corrosion-resistant. All of our OEM coils are 100% leak tested to 150 psi (10.3 bar). Our OEM coils use the same thick (0.028˝/0.7 mm) walled copper tubing and fluxless silver brazed joints as our 6000 Series to ensure the integrity of the fluid circuit.