... treatment 3.machining as customers' requirements Anodized aluminum pipe's specification: Radian20 degrees, 25 degrees,35 degrees ... Advantages of usA. Almost 4 years experience on aluminum extrusion profile, aluminum enclosure profile, aluminum heat sink, ... . Equipments: CNC machines, bending machine, Automatic spark machine, line cutting machine, shearing machine,etc. D. Surface treatment: Anodizing ...