Caldwell Tanks, Inc.

Founded in 1887, the company began with steel and wood tank production and has evolved over more than a century.

Operating from its Louisville, KY headquarters and fabrication plants, Caldwell serves North America with turnkey design, fabrication, and field erection.

It tackles major infrastructure, from community water towers to industrial vessels for oil & gas, chemical, power, and food & beverage sectors.

Its engineering team spans civil, structural, mechanical, chemical, and electrical disciplines, ensuring full

spectrum project control.

Caldwell holds prestigious certifications—ISO 9001:2015 and ASME U/U2/R—enabling pressure vessels and spheres manufacturing.

Notable projects include molten salt thermal storage tanks for a solar plant and whimsical landmarks like the ‘World’s Largest Ketchup Bottle.’

They’ve earned accolades such as multiple STI/SPFA Steel Tank of the Year awards and recognition as America’s Best Small Employer in 2023.

Aided by sister company Preload, they also deliver concrete LNG tanks and double‑wall cryogenic spheres, carving a niche in clean energy storage.

Customer Focused: We are committed to delivering exceptional service and value to our customers.

Integrity: We uphold the highest ethical standards in everything we do.

Safety First: Safety is our top priority in every aspect of our work.

Innovation: We embrace new technologies and methods to stay ahead in the industry.

Teamwork: We work together to achieve common goals and create success for all.

Strives for operational excellence while minimizing environmental impact.

Actively works to reduce waste, increase energy efficiency, and support sustainable practices in all projects.

Focus on sustainable materials and energy

efficient technologies in construction and operations.