Aluminum Brass tube ASTMB111,C68700, manily for Evaporator,Heat Exchanger,Condenser,Distiller,Oil Well Pump,Ferrule and so on 1. Standard: ASTMB 111, C68700, CuZn20AL2. Specfication : O.D 5 mm to O.D 100mm; 3. Quality : Bright and smmoth surface, no burr in the end ; According to the ISO9001;4. Application : manily for Evaporator,Heat Exchanger,Condenser,Distiller,Oil Well Pump,Ferrule and so on ...