1)Up to GB/T8890 / ASTM B111 / JIS H3300 / BS EN12451 standards and so on. 2) Material Brand of Aluminum Brass Tube: Grade USA U.K Germany Japan China BG ASTM CDA BS DIN No JIS H HAL77-2 C68700 687 CZ110 CuZn22Al 2.0460 C6870 3)Tubes temper: All tempers are available (Goods supply state: Annealed condition) 4)Dimensions: Outer diameter:5-350mm, Wall thickness: 0.5-50mm or according to the buyers' requirements, and also length and tolerance subject to the buyer's decisions. 5)Tubes in good straightness, with clean surface of both inside and outside 6)Application range: Aluminum Brass Tube for condenser and heat-exchangers, Water Evaporators, Boiler Blowdown Heat Exchangers, air coolers, Gland Steam Condensers, Steam Ejector, Turbine Oil Coolers, Fuel Oil Heaters, Compressed Air Inter and After Coolers, Ferrules, Oil Well Pump Liner, and Distiller etc.