Naval jelly for pitted steel?

I understand this doesn't belong in this section, but I figured most people here have used naval jelly. I bought a 36" steel flat top grill for the restaurant I am helping open. The steel had been stored very poorly, and has a lot of rust and some reasonably deep pitting. Most of the rust has been removed by sand blasting, but we are left with some rust in the pits, and some unsightly pitting. Can Naval Jelly be used, along with some serious elbow grease and possibly a grinder wheel to remove at least some of the pitting? I had read to leave it on for at least a half hour to break down the metal and then grind and sand it smooth. Anyone have any success removing pitting from steel with this stuff?