Bolted Steel Tanks Immune to Shortage of Welders

Bolted Steel TankSince 1988, the United States has experienced a significant decline in the number of welders. According to the American Welding Society there is a potential shortage of 200,000 skilled welders resulting in project delays and increased costs. To counteract this shortage and thereby save customers time and money, Superior Tank Co., Inc. (STCI) offers a full range of large capacity bolted steel storage tanks. Unlike other storage tank designs which are welded and require a significant amount of welding, bolted steel tanks eliminate the need for costly onsite welding. The limited amount of steel welding required for STCI tank fittings is performed by a robotic welding arm ensuring 100% accuracy.  Steel panels are crafted using precision machinery inside the STCI modern production facility then shipped to the job site. The advanced bolt together design of STCI steel tanks allow for quick and simple assembly on site. By performing steel fabrication in the factory, the amount of noise and air pollution on site is dramatically reduced. The steel tank panels are delivered to the site via one or two trucks lessening local traffic and negative impact.  In addition to saving welding costs, STCI bolted steel storage tanks reduce onsite painting costs as the steel panels are prefinished with durable powder coating. With the high cost and shortage of welders forecast to continue for the foreseeable future, bolted steel storage tanks are certain to continue to increase in popularity.

Is a ‘Tank in a Box’ Right For Your Next Project?


Bolted steel water storage tanks are nothing new and have been used for decades with great levels of success. These tanks are sometimes referred to as a “Tank in a Box” due to the modular design of bolted steel tanks, which allows them to be packed and easily shipped anywhere in the world. Commonly, tanks are shipped via truck or standard shipping container. Tank kits come complete with hardware and fittings, and are ready to erect upon arrival. When properly designed, manufactured and installed, a “Tank in a Box” meets a wide variety of applications.

The unique modular “Tank in a Box” design is based on the use of individual heavy gauge steel plates, which are used to form the tanks. These plates are prefabricated in dedicated facilities using a variety of specialized equipment such as press breaks, robotic welding arms, drill presses and coating machinery. The final finish is applied to all tank components before they are packed for shipping. The components are precision-manufactured for longevity and a well-crafted bolted steel tank can provide over 60 years of service.

Once on site the tanks quickly bolt together with minimum site work. The erection time of a bolted tank can be as little as 1/3 of the time required to construct a similar size welded tank. In addition, the plates arrive to the job site complete with final finish already applied, eliminating the need to sandblast and paint on site. As the tanks only need to be assembled, they can be erected in various weather conditions and are resistant to adverse weather delays.

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Superior Tank Receives Initial FM Certification

TankBlogSuperior Tank Co., Inc. (STCI), the most trusted name in bolted factory powder coated steel storage tanks, announced today it has received its initial FM certification. After a final audit to certify the manufacturing facilities as FM compliant, STCI passed with the highest score possible. The initial certification covers the calculation and drawing size 47′-6 3/8″ x 24′-1 1/2″ high. STCI’s Rancho Cucamonga facilities are qualified at the High QCFM rate which will allow for a lower certification cost for future diameters, as well as different matrix system to mass certify for STCI’s Bolted Steel Storage Tanks. “This is the result of 3 years of hard work, discipline, patience and commitment to a new system based on quality standards and technology driven processing,” said Jhon Godoy, CIO. “Our efforts were highly celebrated by the FM Auditor.” Superior Tank Co., Inc. has been manufacturing and installing a complete line of bolted and welded steel storage tanks for the potable water, wastewater, fire protection, rain harvesting and crude oil industries since 1984. Superior Tank was the first to apply Thermoset Fusion Bonded Powder Coatings to bolted steel storage tanks. STCI’s Storage Tanks conform to standards set by American Water Works Association (AWWA) and National Fire Protection Association (NFPA). Superior Tank Co., Inc. also follows the standards and specifications set by the American Petroleum Institute (API). STCI can manufacture bolted steel storage tanks in capacities of 4,000 gal to 2.2 million gal. and can be shipped and erected bolted to anywhere in the world. Superior Tank Co., Inc. offers the following services: engineering, design, manufacturing, maintenance, service agreements, fabrication, installation, dismantling, tank rehabilitation and seismic retrofits. In addition, STCI also performs site work preparation and foundation design, i.e. grading, excavating, structural concrete.

About Superior Tank Co., Inc.

Superior Tank Company, Inc. is a family-owned business started by Jess E. Marquez in 1984. Mr. Marquez has 60 years worth of experience in managing oilfield and water tank construction and installation. All together the family has over a 100 years of experience in the bolted and welded steel storage tank business. Next year will mark STCI’s 30th year of business and the opening of its second manufacturing facility in Texas.

Glass Coated Tanks – Worth the Money?

Glass TanksOf all the questions we are asked while attending trade shows all over the world, the following questions are the two most common: first; “What are the advantages of factory powder coated tanks over glass-coated tanks?” and  “are they really cheaper than glass-coated tanks?”. One of the most important points to consider when deciding between a glass-coated tank and a powder coated tank is the tank’s life cycle cost. Two of the most common misconceptions are that glass-coated tanks are cheaper because they never need to be recoated and that a glass-coated tank will last forever. Well…… false in the first count, therefore, false in the second count; glass-coated tanks are very rigid and have little flexibility. They are more often than not subject to coating failure at the bolt heads and edges, making them vulnerable to corrosion attacks. There have been many incidents of spalling, where glass has flaked into stored liquids within the first 5 -10 years of the tank’s life. That’s pretty disturbing, especially if you are the end user, relying on the quality of the water stored inside the tanks. One more item to consider in your “worthiness checklist” is that glass-coated tanks are not entirely coated; parts of the structure (wind girders, nozzles, rafters, etc.) are made of galvanized steel, the tank’s top is aluminum and the bottom is concrete. This means that cathodic protection will be required and the maintenance of such a system is a continuous and expensive burden, to say the least. Wear and tear is an inevitable issue for all tanks. Considering that a glass coated tank cannot be recoated in the field, the downtime for maintenance is a huge cost issue; selecting the right coating for your needs should be a top priority. At the end of its life cycle, a glass-coated tank must be totally dismantled and sometimes fully replaced. This means field repair is not an option and the extended service life is nonexistent. Now, all of a sudden the total life cycle cost of a glass-coated tank becomes astronomical. It doesn’t seem to be worth the money after all, does it? We pioneered the use of powder coating in the industry 24 year ago for two indisputable reasons: quality and durability. These reasons have been the driving force for excellence behind our products, making powder coated tanks reliable and trouble free. Ask around, you won’t regret it. If you stop and think about what makes the purchase of a bolted steel storage tank successful, you will realize that choosing the right coating is fundamental in achieving the savings and trouble-free storage you desire. Factory powder coated tanks seem to be not only the wisest choice, but the only choice.