Stud bolt welding machine Drawn arc weld stud diameter 5 mm-25 mm. welding current: 300A-1800A. welding speed: 5-30 pcs/min Drawn arc Stud welding machine DC1800A modelstud diameter 5 mm-25 mm.Voltage 380Vwelding current: 300A-1800A.welding speed: 5-30 pcs/minWidely used in stud welding of steel structure Stud bolt welding machine Drawn arc weld 22mm dia.