This is a trap welding Don't ever do it! 

hello
This time, I prepared 4 inch sch 40s pipe welding.
If there are many welds on one spool, it is a waste of time and poor quality.
Non-destructive testing can increase the defect rate
Beginners do not follow
It can be very difficult mentally.
But I can do it because it's Welding Mon~! haha
El Primo...
#tig
#trap
#plumber
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