Lo94S-10
+1y
Black Iron pipe IS strong enough to use for crossmembers, even bridges for bags, hydros, etc. I built a bridge out of it, bent the tubing (Without kinking it I might add, not easy) and ran hydros with it for about 4 years, now, 7 years later, after I cut it off 3 years ago and welded it to another truck, it's still going strong. As long as you clean it up good enough (Very important) and get good penetration, It should work fine. Tubing would be the correct stuff to use, but you gotta do what you gotta do I guess.