Aluminium wire for coating is widely used in arc and flange flame spray systems, highly anti-corroision and anti-high temperature, coatings to resist heat and prevent scaling of conventional low alloy steels, bond coats for improving the adhesion of top coatings, coatings on moulds in the glass industry. The aluminium wire for coating adopts high quality aluminum ingot, no other substances enter the process from raw material (aluminum ingot) input to strip output, and the product is not exposed to other metal. The detection adopts type direct-reading spectrometer,inductively coupled plasma atomic emission spectrum and other high-end testing instruments. Strict check and detection are conducted in the whole working procedures including raw material-wire output-big drawing-middle drawing-water tank-baling-storage. The surface of aluminum wire is smooth and bright; no break of wire exists; single wire has no greasy dirt, burr, scratch or scar; there is no block of device in application.