... A/C condenser and refrigerator 2:aluminium parallel flat tube and round tube 3:sample can be avaiable Round tube Alloy: 1000 series ... and condenser pipeAluminium condenser tubeFlat tubeAlloy: 1000 series, such as 1050,1100,1070. 3000 series,such as 3003,3102, 6000series,D97width 12mm ... and condenser pipe 5~30.... aluminium parallel flat tube for A/C condenser