... of carbon steel,stainless steel,alloyed steel,coppe,titanium etc. WS SERIES IGBT INVERTER DC ARGON WELDING MACHINE Model number ... :WS-315WS-400WS-500WS-630Input Power Voltage(V)3φ 380V±10% ... noted for high-quality welding seams and good forming performance. WS SERIES IGBT INVERTER DC ARGON WELDING MACHINE