... in 2011,have spectrometer,can guarante quality Type3003 Aluminium alloy pipeMaterial1000 series : 1010,1050,1060,1070,1100, ... 1-6mmdiameter10mm-300mmLengthNormally between 2m to 6m.PackingCovered with PVC, and then wooden box/metal pallet,etc ... we have our own spectrometer, which could test the aluminium material grade, so, for our quality, you ... as you have any instructions. 3003 aluminium alloy pipe