Strip and Prime Metal

• A metal pipe fence must be stripped down to its bare metal before you start painting. You can use a #50 sandpaper to remove all the rust. While sanding, you can apply a rust remover to the metal pipes. Repeat the sanding and the application of rust remover until all the rust is gone. After all the rust is gone, wipe the pipes with a clean rag.
  
  Next you can apply the primer. Use a metal primer, such as an oil-based iron oxide metal primer, to avoid rust and corrosion from seeping through the top coat. It effectively eliminates corrosion in metals. Apply thick coats of metal primer.
  
  

Apply Paint

• The best tool to use in painting a metal pipe fence would be the paint mitt. The paint mitt is just a rubber glove that has a coating similar to that of a paint roller. Using a sprayer to paint metal pipe fences will not do; you will just be wasting a lot of paint. A paint roller will not be able to fit into the gaps. A paint mitt will also make the work faster. You just wrap your hands around the pipe and start rubbing in the paint.
  
  Aluminum paint is a good choice of paint to use on metal pipe fences. It will last a long time, and rust does not easily show through it. Aluminum paint pigments tend to settle at the bottom of the can, so stir the paint can every once in a while. If you want to have color in your metal pipe fence, then you can also use any oil-based paint for metals. They come in a wide variety of colors that you can choose from. Apply two coats of the finishing paint for added protection against the elements.