... alloy such as 6000,70004) Various in size, style (aluminum profile , rods, flat bars, angles, square bars , "T" profiles, ... and "U" channel5)Surface finish:mill finish,powder coated,anodized,electrophoresis,spraying ... flat bars, angles, square bars , "T" profiles, and "U" channel5)Surface finish:mill finish,powder coated,anodized,electrophoresis,spraying ...