... alloy Diameter: 19mm,22mm,25mm,28mm,32mm Surface treatment: spray-painting,electroplating aluminum tubeMaterial:aluminum alloyDiameter:19mm,22mm,25mm ... round tube, industrial aluminum tube1) Material: Aluminum alloy2) Diameter: 19mm,22mm,25mm,28mm,32mm3) Surface treatment: Spray-painting, ... , gold, etc. Anodized.6) We can do the diameter, thickness, length, packing by customers reuqest. OEM orders ...