Being from the Refining industry where we have every weld xray'd, scanned and then reheatreat the metal. I'm always amazed at what I see others get away with. But being in industry for 38 years means I've seen it all. Stainless was never what was stated until the guns came out reading the metal. When we first got one we sent a lot of materials back that were finished product ready to be installed with the wrong metals used but still labeled as the right metals. And fitting were also always wrong.
When a small producer that buys materials from someone else states what their product is made out of. I always cringe. Knowing that if they don't have the abilities to check, someone is probably screwing them over.