... 6063,6061,6A02,3003,etc 4.top quality,reasonable price extruded aluminum tube 1.Specifications PRODUCTaluminum tubeALLOY1060,2A12,3003,3A21,5A02,5052,6063 ... ,6A02 OUT DIAMETER 20-250mmWALL THICKNESS 3-20mmSHAPE round, square ,oval, flat ect STANDARD GB/T 3880-2006APPLICATION machine,construction,decoration ... :0086 -531- 87866700.I will reply you soon 35mm,20mm extruded aluminum tube