I recently replaced some old miller equipment with a couple of Everlast multi-process machines because all the other manufactures have **** for duty cycles nowadays on any of they're machines under $5 grand. The Everlast machines are as good as any Miller I ever used and I pretty much owned or...
If you want steel pipe that's rated stay clear of the box store junk because they just stock the cheapest stuff they can get and every month it's different. Go to a plumbing or industrial supply and get the correct material for your application along with the fittings you need all in one shot.
I have the Belleville 390 Des without the steel toe, I also use the Wellco T160's, they are almost the same as the 390's. Get 1/2 size larger so you can add thicker insoles if needed.
Been using these Belleville USMC desert boots for years, most comfortable boots I ever found and you can find them discounted on ebay. Also Danner and Bates make similar gov. approved boots.
http://www.militarybootsdirect.com/safety-composite-steel-toe-combat-boots.html
The old power poles were cca treated not creosote and yes I have removed some of the 40+ year-old post in my buildings while doing some renovations and creating some larger open areas, the sections that were in the ground looked like they were just recently installed.
They recently replaced a bunch of old telephone poles on my road, the upper sections were burnt out from the sun and cracking but the ends that were in the ground looked almost new.
I have several 45-year-old pole buildings with no termite damage in the 6x6 posts and we have no shortage of termites in the woods surrounding these buildings. You need to make sure to get properly treated post from a good supplier and not the junk they sell at the discount joints.