1. solar collector Laser welding system, welding speed 3.5min/pc 2. 2 work stations of the system, uploading and downloading workpiece over one meanwhile welding over the other one. 3. Welding speed: 4800mm/min=2400mm/min * 2 output laser beam 4. Weld strength: Endure 1.3MPa Water pressure within copper tube for 5 minutes 5. Autocorrection on copper tube position range: 2mm
