... .6mm 3. the spool of 1kg, 5kg, 10kg, 15kg, 20kg Co2 gas shielded welding wire/ ER70S-6Model series:ER50S-6, ER70S ... Akv(-29CJ) ≥27Application: AWS ER70S-6 solder wire is suitable for CO2 shielded welding of low carbon steel and low alloy steel ... ,particularly it is suitable for welding rolling stock,container,engineering machinery,and pressure container,etc ...