... steel, copper, titanium, stainless steel etc. 3. Good heat conduction. Basis tube material: Carbon steel, copper, titanium ... .Advantage: Good and stable heat conduction performance, corrosion resistance, small heat resistance, high indesity, small resistance, dustproofing, durable service and ... , chemical, metallurgy coating, timber etc.Model SZL heat changer ExpressionSZL-5 X 5- 35: The effective ...