... in 2011,have spectrometer,can guarante quality Type3003 Aluminium alloy pipeMaterial1000 series : 1010,1050,1060,1070,1100 ... BS, GB, DIN, JIS,etc.coloursGolden, rose gold, titanium golden coating, champagne gold, Brown,Bronze,Black,sapphire blue, ... we have our own spectrometer, which could test the aluminium material grade, so, for our quality, you ... you have any instructions. 3003 aluminium alloy pipe