freds40 is correct and I just verified this on all of our front and rear bumpers and our rock sliders.
BigMike
What made me think of this is on one of my sliders the weld was on an exposed area of the bent part of the slider. When we installed it my buddy and I discussed this and put the slider on weld side up. Otherwise I usually dont come up with good questions. Hahaha Thanks for the input!