Chicago Boiler is one of the founding companies for STI/SPFA tanks since 1916.
STI currently offers 2 Aboveground Storage Tank (AST), and 1 Underground Storage Tank (UST) technologies.
They are as follows:
- Aboveground Storage Tank Technologies
- F921® – Double-wall steel tank
- F911® – Open-top diked system
- Underground Storage Tank Technologies
- Sti-P3® – Cathodically protected steel tank
