Aluminum tube is widely used for refrigeration and air condition industry. Like evaporator,air conditioner,condenser,heat exchanger,freezer,oven gas,boiler and so on Material Pancake Coil Aluminum Tube Alloy 1050,1060,1070 OD 7.0-19.0mm Wall Thickness 0.75-1.5MM Standard GB/T4437.1-2000/ASTM B 241/B-241M-1999 Quality Certificate ISO9001-2008/RoSH/CTI Tensile strength 60-95Mpa Elongation >39% Heat treatment O/H112/H14/H16/H22/H24/T3/T4/T5/T6/T7/T8 leakage NO,N2 gas keep inside at least 24 hours for testing Packing Details 75x75x30cm carton 6cartons=1wooden pallet 126cartons in 1x20??GP 252catons in 1x40??GP Payment L/C,T/T, Delivery 25-30 dayseel tube: Thickness The tolerance allowed (based on no coating) 0.50 ±0.07mm 0.70 ±0.08mm 1.00 ±0.09mm