Already have a dike and looking to upgrade your single wall tank? Or, possibly a custom application for a specific product; let Steel Tank and Fabricating Corp help you with our extensive inventory and manufacturing capabilities on single wall tanks. Whether it’s UL142 listed, API650 or a tank built to your own specifications STAFCO’s vast manufacturing experience will ensure a well-built reliable tank for years to come. Single wall tanks are available in both vertical and horizontal configurations up to 50,000 gallons in both carbon steel and stainless steel materials.