aluminum tube Material: aluminum alloy Diameter: 19mm,22mm,25mm,28mm,32mm Surface treatment: spray-painting,electroplating aluminum tubeMaterial:aluminum alloyDiameter:19mm,22mm,25mm,28mm,32mmSurface treatment ... , etc. Anodized.6) We can do the diameter, thickness, length, packing by customers reuqest. OEM orders are welcome. commodity aluminum alloy round tube