large diameter aluminum tube 1.out dia 20-250mm ... 6063,6061,6A02,3003,etc top quality,reasonable price large diameter aluminum tube 1.Specifications PRODUCTaluminum tubeALLOY1060,2A12,3003, ... 3A21,5A02,5052,6063,6061,6A02 OUT DIAMETER 20-250mmWALL THICKNESS 3-20mmSHAPE round, square ,oval, ... ,and also sold to over 180 medium and large enterprises in Zhejiang,Shanghai,Hangzhou,Wuhan,Shandong and ...