anodized aluminum pipe anodized aluminium tube most code aluminium alloy available, with heat and surface treatment ... , T3, T4, T5, T6, T7, T8, T351, T6513) surface treatment: plain, anode oxidation, plastic powder coating, electrophoresis, polishing, etc.4) National ... /T3191-1998quote on sample, drawing and material code. anodized aluminum tube