... Welded 4.Material: Carbon steel/Stainless steel/Aluminium/Alloy steel etc. PRODUCTDESCRIPTIONTUBE MATERIALFIN MATERIALTUBE SIZEFIN SIZEHigh Finned ... Steel TubeAlloy Steel MaterialAlloy Steel MaterialIntegral Copper & Copper Alloy High Finned TubeC12200, C11000, C70600C12200, C11000, C7060015 ... TubeLow Fin TubeCarbon Steel, stainless steel, titanium, copper, brass, nickel alloy, etc.--9.52~4012,16,19 28 ...