ark will weld anything that a mig can. ur cover gas is contained in the rod, instead of in a tank. so if u want a solid weld then DONT BREAK THE FLUX around the rod. took welding 2 years ago, my teacher had us build a buch of trailers, usually 45-52 feet long gooseneck flatbeds/horse trailers. used ark welders usually, sometimes mig. ark will weld on any steel, welded diamond plate 1/4" on the flatbeds.
