This machine is used for welding tubes and minor elbows on condensers and evaporators The main for automatic welding of copper tube small ... ) Welding speed: 200 - 6,500mm/min Main technical parameter ModelHJA-Automatic Welding MachineConveyor Length, mbefore 3.5 ,middle 1.4 ,after ... (row)1 ~ 4Note: The technical parameter according to the contract Automatic Welding Machine