Thank you for the explanation fellow. I see what Robert is saying now. They have a huge container just for stainless and they don't sort, they just throw it all in there and so various grades are all mixed in there together. :) ;) Got it. Sometimes you gotta dummy stuff down so I can understand it. :)
And Chuck, about that piece that you show there, all eaten up. From what I can see it is pretty thin and flimsy stuff for you to be able to shape it to go around the contours of the barrel. I am using two nice big sheets, one at each side of the barrel, hooked together, and unless I had a bending machine, theres no way I could bend them to contour the inside of a round barrel. BUT, maybe I am missing something with you Chuck, and maybe you did have/use a bending machine that shaped your SS.