The construction of a Squibb Tank bottom includes a one and a half inch (nominal) flange. This enables for both an exterior and an interior weld between the tank bottom and first wrap of the tank. This dual weld allows for a deeper penetrating weld, a stronger base, and reduced potential of failure.
Competitors often offer a "T-Joint" weld or a "Flat-Bottom" tank production process. This process is a singular exterior weld around the perimeter of the tank bottom. This practice leaves a ridge on the outside of the tank that invariably traps or cups water and moisture against the tank at its weld. Thus creating the potential for failure and drastically reducing the life of the tank.