Mike, the only reason I said MIG instead of TIG is because outdoorlvr said it was just some small pitting. Anything like the large job that Chuck H. did, then I would definetly say TIG. Unless the area is to be welded is spotless, and with a TIG, that means burr grinding the metal to be free of defects, (piting, rust) or else like someone said you are going to get a lot of porosity. IMOP that is why I said MIG weld.

David