... 1.2mm, 1.6mm 3. the spool of 1kg, 5kg, 10kg, 15kg, 20kg Co2 gas shielded welding wire/ ER70S-6Model series:ER50S ... of 2.5kg, 5kg, 10kg, 20kgChemical components of solder wire(%): C Mn Si S P Cu 0.06~0.15 ... Impact V-Notch Akv(-29CJ) ≥27Application: AWS ER70S-6 solder wire is suitable for CO2 shielded welding of low carbon steel ... It can carry out welding at all positions. CO2 welding wire, various types