The following was extracted from the Ohio Flame website FAQ page:
IS ANY MAINTENANCE REQUIRED FOR MY OHIO FLAME FIRE PIT?
No maintenance is required on our Fire Pits. Because we use thick gauge American steel that can withstand the elements, you don’t have to baby the Fire Pit or put a cover on it when it’s not in use. It’s also not required to bring in your Fire Pit at the end of the summer season. Our Fire Pits are built for year round use. We’re used to cold and snowy Winters and rainy Springs in Northeast Ohio and our Fire Pits can stand up to what mother nature brings our way. We put a substantial center hole in the center of the Fire Bowl to serve as a Rain Drain and let out any rain water accumulation. The only thing that we suggest is to periodically empty out any excessive accumulation of ash or debris from the Fire Bowl. This can be done with a shovel when the ash and debris have cooled.
HOW LONG CAN I EXPECT MY FIRE PIT TO LAST?
We offer a Lifetime Warranty on the steel of the Fire Bowl. Because we use thick gauge American steel, our Fire Pits are guaranteed to not rust through, rot or warp in your lifetime. Although our steel Fire Pits will develop a natural iron oxide patina over time, this process occurs only at the surface level. Over time, this patina process will darken slightly and act as a protective finish that will prevent the steel below from continuing to oxidize. You can probably expect these Fire Pits to last for several generations, but to keep things simple, we just call it a Lifetime Warranty.