... of 1kg, 5kg, 10kg, 15kg, 20kg Co2 gas shielded welding wire/ ER70S-6Model series:ER50S-6, ER70S- ... 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 ... property,It can carry out welding at all positions. CO2 welding wire, various types