3003 aluminium alloy pipe thickness0.1-6mm,diameter:10-300mm export 1000ton in 2011,have spectrometer,can guarante quality Type3003 Aluminium alloy pipeMaterial1000 ... ,5754,5056,5083,5182,etc6000 series: 6005,6061,6063,6082,6351,etc7000 series: 7003,7005,7020,7075,7475,etc8000 ... Besides, we have our own spectrometer, which could test the aluminium material grade, so, for our quality, you can really ...