aluminum round pipe size 1.out dia 20-250mm 2.wall thk ... 6061,6A02,3003,etc 4.top quality,reasonable price aluminum round pipe size 1.Specifications PRODUCTaluminum pipeALLOY1060,2A12,3003,3A21,5A02, ... ,6063,6061,6A02 OUT DIAMETER 20-250mmWALL THICKNESS 3-20mmSHAPE round, square ,oval, flat ect STANDARD GB/T 3880-2006APPLICATION ... 531- 87866700.I will reply you soon 35mm,20mm aluminum round pipe size