... heat radiation, max width 700mm, anodizing, sand blasting, polished and mill finish etc. welded. Aluminium heat sinks/exchanger 1, Material: 6 series ... 3, Temper: T5, T6 4, Surface treatment: mill finish, polished, sand blasting, black or silver or white anodized, powder coated, Chromating ... , electronic equipment frame, power wind etc for industrial use. extrusion aluminium heat sink for LED