... export 1000ton in 2011,have spectrometer,can guarante quality Type3003 Aluminium alloy pipeMaterial1000 series : 1010,1050,1060,1070,1100,1200,etc2000 series ... , we have our own spectrometer, which could test the aluminium material grade, so, for our quality, you can really feel free.Contact ... contact me as soon as you have any instructions. 3003 aluminium alloy pipe