HI All,
I would like to ask some question..
1) Why do we need to do 2 processes (GTAW + SMAW) instead of one process?
- Based on what I know that normally used two instead of one is to save the total of welding time when dealing with big pipe bore.
2) I heard that 3" and below only need one process (GTAW), why? Is it depending on the Thickness or NPS? (Any ASME Sec. Recommended?)
![confused :confused:](/f2/epx.png)