... aluminum pipe 6000 series T3-T8 anodized,sand blasted,powder coated,etc drilling,bending,punching,milling,etc Aluminum Extrusion Pipe1.High quality guaranteed and ... .2.Widely used in construction,decoration and industry.3.Various kinds of materail aluminum alloy such as 6061,6063,etc. ... with or without color, hard anodizing, powder coating, painting and silkscreen printing,etc. curved aluminum pipe