Anyone using a pancake for welding?

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Worked pipe construction for 25 years as a welder/fitter;never saw any-one use one of those.Most common on pipe-line welders,out-doors and down hill welding.

On low pressure steam inside boilers we could do a downhand open root with 6010. After the gap was filled, we would grind the ever living snot out of it, then finish the weld going up-hill with 7018, and of course stringers (no weaving).

I think 40 psi was the top end of that kind of weld though.