With your pressure washer ratings, you would want to purchase this DWSDBTK. This kit would absolutely work with your machine and would definitely be able to remove the rust coating off of steel. You will have to purchase a nozzle in order for this kit to work though. The nozzles are listed in the same category as the sandblast kits and the size depends on the media that you would be using in conjuction with your pressure washer ratings.