Copper Nickel Tube in ASTM B 111 C71500& C71640 1.Use:Evaporator,Heat Exchanger,Condenser,Distiller ... 2.ISO9001/14001/18001 Copper Nickel Tube in ASTM B 111 C71500& C716401.Use:Evaporator,Heat Exchanger,Condenser,Distiller2.ISO9001 ... days below 50Metric Tons;2) Quality Assured: Strictly acc. To International standard ASTM & BS & EN & JIS, with System ISO 9001 certification ...