I have a wrought iron fire escape/balcony which needs rubbing down to bare metal and the necessary protection and painting done. I don't know what you actually call them but the sheets of metal which you walk on may need replacing (Rusty)
We have a metal garden gate that our dog can crawl under. The gate is new and evidently not much of a success. It needs a bit of hinged welding to allow it to fold back against a wall and over a step.