... stainless steel, copper, aluminum, etc.Stud diameter M3~M12,the capacitor is 13200uf Features: Character:Adopt PIC single chip control systerm,which can ... to weld carbon steel ,stainless steel,copper alloy and aluminum ally.Short charging time,high working efficiency.The machine can ... ~8mm/stainless steel 3~10mm/stainless steel3~8mm/aluminum alloy 3~7mm/aluminum alloy 3~8mm/aluminum3~6mm/copper alloy 3 ...