Aluminium profile also named aluminium extrusion. Extrusion is the process of pushing a heated aluminium billet through a die of the desired cross-section. The formed profile is lightweight, strong and corrosion-resistant, and the shapes just like the opening of the die. Generally, the die is made of indurative steel or cemented carbide. There are two kinds of conventional methods of extruding aluminium, direct extrusion (same as forwarding extrusion) and indirect extrusion (same as backward extrusion). And there are various ways of categorizing aluminium profile. According to the aluminium material, the aluminium profile can be classified as 1100 aluminium profile, 6061 aluminium profile, 6063 aluminium profile. According to different applications, it can be classified as an architectural aluminium profile, industrial aluminium profile, etc.