Times have been good for the past few years due to fracking and (here in the Midwest) refurbishment of many nuclear powerplants.
The fracking boom is probably over though and I believe most of the nuclear powerplant work came as plants built in the 70s reached EOL.
I don't see any sort of blossoming of welding in this country. Production welding is robots or offshore and has been for a long time. Same with shipbuilding. There's always architectural work but that's been pretty moribund for some time now. Industrial work is highly cyclical.