In our fabshop, we frequently use GMAW-S+SAW
for heavy wall CS pipe for low pressure steam lines. Radiography quality of butt joints are excellent. However, client rejected our
proposal to use the same combination process for low alloy steel with reduced CO2. Client is not interested to
approve C02 process for LAS root even after our proposal to reduce CO2 content
in the shielding gas. Due to client disagreement, we have to use GTAW+SAW, which
may affect our productivity. Does anyone have satisfactory service experience
in low alloy steel welds made by GMAW root with 97%Ar+2% CO2 shielding?
GMAW-S for LAS Root Service Experience
Re: GMAW-S for LAS root service experience
