... ,22mm,25mm,28mm,32mmSurface treatment: spray-painting, electroplatingAluminum tube, aluminum round tube, industrial aluminum tube1) Material: Aluminum alloy2) Diameter: 19mm,22mm ... -painting: white, silver, grey, pink, blue, green, etc. Electroplating: Brass, chrome, silver, gold, etc. Anodized.6) We can do the diameter ... by customers reuqest. OEM orders are welcome. commodity aluminum alloy round tube