AWS ER70S-6 CO2 welding wire Diameter: 1.2mm Welding Current: 80-350 A CO2 Flow Rate( L/ min) : 15-25 Introduction: Strong resistance to surface scales and oil stains on the base metal. It has low blowhole sensitivity. Application: 1. Used for welding all kinds of 500MPa structural steel parts. 2.Used for welding all kinds of 500MPa plates and pipes.