... T6 2.for door,window,curtain wall and others 3.mill finish,anodize,electrophoresis,ect Features of aluminum window profile,aluminium extrusion1.Material ... : Al 6061,60632.Temper:T4,T5,T63.Applied for door,window,curtain wall and other architectural purpose ... ,iron-paller or as customer demand6.Avaliable in colorful and different surface treatment