what power laser welding machine do i need for brass

can a handheld laser welder be used for ductwork weldingwhat watt metal laser welding machine do i need for welding galvanized steelcan a 2000w semi automatic laser welding machine weld brasshandheld laser rust removal machine for copperis a 300w metal laser welding machine good for metal fabricationwhich fiber laser welding machine is best for welding nickelcan a 400w open laser welding machine weld red copperis a 400w laser welding system good for seam weldingsmall galvanometer laser welding machine3 axis laser welding machine for switchboard cabinet welding
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