GrillSymbol Corten Steel Fire Pit Fogo

Made of Cor-Ten steel which is almost pure carbon steel but processed in order to have a protective layer on the surface to make it weather-proof. The surface is originally greyish, due the weather conditions it turns reddish-brown (resembles the colour of rusting), which becomes darker within time.

https://www.grillsymbol.com/shop/corten-steel-fire-pits/grillsymbol-corten-steel-fire-pit-fogo/