This trailer is getting wheel seals and brakes as well as welding repair.
This trailer frame has a stress crack which can be dangerous and is illegal. The welding repair is complete and it is ready for paint.
Some trailers have a lot of life left in them but may require some structural welding repair to be legal and safe.
When damage occurs getting it repaired quickly and correctly is vitally important and sometimes welding fabrication repairs can be difficult to find.