... 3. the spool of 1kg, 5kg, 10kg, 15kg, 20kg Co2 gas shielded welding wire/ ER70S-6 Model series:ER50S-6, ER70S-6, ER70S- ... is suitable for welding rolling stock,container,engineering machinery,and pressure container,etc. Features:Stable electric arc,low splashing,high ... deposition efficiency and good anti pore property,It can carry out welding at all positions ...