1) Alloy no.: C12200, Temper: hard or half hard 2) Standard complied: ASTM B-88, EN-1057, GBT-18033, ... and Plasic-coated Copper Tubes. Being of the top-class quality the products, We have passed ISO9001, ISO14001, UPC,SGS and ... that the products we produced are always of the best quality The main application of aluminum tubes: Automotive heat exchangers, air ...