To install a wrought iron fence, use stakes and string to mark out the placement and height of the fence posts. Dig holes for each fence post to about 2 feet deep. The fence posts typically contain screw holes in them for the panels. Install the posts to the desired height of the fence. Set the posts in concrete, and allow it to dry. When the posts are solidly in place, attach the wrought iron fence panels to the posts.
Depending on the size of the posts, the holes should be about 6 inches in diameter. Hold the post up, and surround it with a layer of mixed concrete about 4 inches deep. When the concrete dries, fill the rest of the hole with excavating dirt to help keep the post in place.
To attach the fence panels, slide the panel bracket over the end of the horizontal end of the fence post. If necessary, use a hacksaw to trim away any excess bracketing where the panels do not fit over the post end. When in place, use a power drill and self-tapping screws to secure the panels to the fence post.
If desired, wait several days for the fence height to settle, and then hang the wrought iron fence gate. Screw the gate hinges onto one of the posts with the drill and screws.