Rectangular Tanks

At Southern Tank, we specialize in designing and fabricating custom rectangular steel tanks built to meet your exact specifications. Engineered for durability and long-term performance, our rectangular tanks are reinforced with structural stiffeners to maintain their integrity under demanding conditions. When compared with plastic alternatives, steel provides far superior strength, reliability, and service life.

Built to Perform

Every tank we produce is built around your needs. Whether you require a compact tank for tight spaces or a large-capacity solution for industrial applications, we can fabricate a tank that fits. Our rectangular tanks are available in single- or double-wall designs and can be constructed to meet UL 142 standards. For added fire protection, we also offer STI Flameshield®, STI F921®, and STI Fireguard® (UL 2085) certified options.

Versatile Applications

Rectangular tanks are a practical choice for both new construction and replacement installations. They are commonly used in catwalk, under-catwalk, and bench-top configurations, and they’re well suited for storing new or used oil. In addition, many customers rely on our tanks for sub-base generator fuel storage, where space efficiency and reliability are critical.

Accessories & Options

To maximize performance and ensure your tank integrates seamlessly with your operation, Southern Tank provides a wide range of accessories and design options. Depending on your needs, your rectangular tank can include:

• Spill containment systems, manways, ladders, and catwalks
• Fill systems with overfill protection
• Support structures such as channel, I-beams, fork tubes, or angle iron
• Custom exterior coatings and interior linings for compatibility with specific liquids
• Optional compartmentalization with impervious bulkheads to allow multi-product storage

By combining these options with our precision engineering, we deliver tanks that are not only functional but also tailored to your operational requirements.

Engineered to Fit. Built to Last.

When you choose Southern Tank, you’re investing in a solution that’s built for performance and longevity. Contact us today to discuss your rectangular tank project or to request a custom quote.