that sort of thing one would make for oneself..should be a sheet metal shop around your area that could bend up a box to your dimesions and you can make some legs and frame to support the table..that is what I would do..In fact I could use something like that for my parts cleaning and such..
Make it big and sturdy enough to put a tranny or something of that size on the table..
See if there is an outfit that builds commercial kitchens in your area..they can make a stainless top that could fit your needs..
Good idea you have here..