One of the backgrounds of Black's Base, from the beloved and classic Gunstar Heroes. This background may be familiar for some, because of the infamous Cool or Cruel's Tubular stage made by worldpeace. It can fit industrial areas, overall.
Uses 2 background slots, about 90 tiles, so there's a lot of space in the BG3 to use as you like. Uses palette 3, but the last five colors are free.