You posted that on critical vessel or pressure applications MIG isn't an approved procedure. It is with ASME or NACE. If the powers that be dictate MIG at any point in the weld, so shall it be. Stick and TIG are often used for root passes either because it is easier, or the fact more people are qualified for those processes. I'd argue the short circuit being approved for root passes, but we may not agree on the terminology. I don't recall off-hand the amperage cut-offs between short circuit and globular. Pulsed and spray are both good for ASME and NACE.
I enjoy giving TIG welders a hard time, and it's mostly tongue in cheek. A cry aby is a cry baby, and it afflicts all processes, trades, races,genders, and so on. I've heard more than one TIG hand claim to be faster and better than an orbital machine, but have yet to see that.
I do know one thing for certain. ASME has removed any fun I have ever experienced with welding. I like to weld, but that isn't enough, and I look forward to the day when I can walk away from the money and just do something I enjoy.
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