1, pure copper tube process advantages:
　　①Melting and casting process advantages: the use of reflector furnace melting or industrial frequency core induction furnace melting; the use of copper mold or iron mold casting, the melting process should be minimized to reduce the source of gas, and the use of calcined charcoal as a flux, can also be used as a phosphorus deoxidizer. The casting process is carried out under nitrogen protection or covered with soot, the recommended casting temperature of 1150-1230 degree , the line shrinkage of 2.1%
　　② Advantages of molding performance: excellent cold and hot working performance, can be processed with a variety of traditional machining processes, such as stretching, calendering, deep punching, bending, fine pressing and spinning. The heating medium atmosphere should be controlled during hot working so that it is slightly oxidizing. Heat processing temperature of 800-950 degree .

　　④Cuttable (HPb63-3 cutting 100%)/%: 20
　　2,Phosphorus deoxidized copper tube process advantages:
　　①Melting and casting process advantages: the use of industrial frequency core induction furnace melting. High-temperature pure copper gas absorption, melting should minimize the source of gas, and the use of calcined charcoal as a flux, can also be used as a phosphorus deoxidizer, casting process in nitrogen protection or covered with soot, casting temperature of 1150-1180 degree .
　　② Advantage of molding performance: excellent cold and hot working performance, can be fine blanking, stretching, pier riveting, extrusion, deep drawing, bending and spinning. Hot processing temperature of 800-900 degree .

　　④ Cutability (HPb63-3 cutability is 100%) / %: 20
　　3,Phosphorus deoxidized copper tube process advantages:
　　① melting and casting process advantages: the use of public frequency core induction furnace melting, raw material selection Wcu>99.97% and Wzn<0.003% copper electrolytic. Melting should minimize the source of gas, and the use of calcined charcoal as a flux, can also be used as a phosphorus deoxidizer, burn casting process in nitrogen protection or covered with soot under the casting temperature of 150-1180 ° C
　　② molding performance advantages: excellent cold and hot working performance, can be processed with a variety of traditional processing techniques, such as stretching, calendering, extrusion, bending, stamping, shearing, upsetting calcined, spinning calcined, knurling, winding, spinning, thread rolling and so on. Malleability of several good, 65% of the forging brass, hot working temperature of 800-900 degree .

　　④ Cutting (HPb63-3 cutting for 100%)/%: 20

, ,