Bolted steel tanks from Superior Tank can be designed to fit a wide variety of applications such as water storage tanks, clarifiers and anaerobic/aerobic digesters. For potable water storage, NSF 61/372 certified bolted steel tanks are also available. They significantly reduce the amount of work required on site. All tank components are precision manufactured at the factory and finished with powder coating, and then the unassembled tanks are delivered directly to the job site. Specific appurtenances including perimeter weirs, aeration piping, and bottom sumps are engineered and custom-crafted to meet the project requirements. Only basic assembly of prefabricated components is required on site. All welding, grinding, sandblasting, and painting on site is eliminated, and therefore site disruption is significantly reduced. 800-221-8265; www.superiortank.com