aluminum tube Material: aluminum alloy Diameter: 19mm,22mm,25mm, ... 19mm,22mm,25mm,28mm,32mmSurface treatment: spray-painting, electroplatingAluminum tube, aluminum round tube, industrial aluminum tube1) Material: Aluminum alloy2) Diameter: 19mm ... 0.5mm,0.6mm,0.7mm,0.8mm,0.9mm,1.0mm,1.5mm5) Color: Spray-painting: white, silver, grey, ... reuqest. OEM orders are welcome. commodity aluminum alloy round tube