bolted tanks powder epoxy tanks wastewater tanks BOLTED TANKS Columbian TecTank™ company manufacturers bolted tanks and shop-welded tanks in coated carbon steel, aluminum and stainless steel. For bolted storage tanks there is an option of galvanized steel. Columbian TecTank™ API bolted tanks are used extensively in oil field applications. Columbian TecTank™ bolted tanks are suitable for a variety of industrial liquids. Bolted tanks may be fitted with plastic encapsulated bolt heads and nut caps for additional protection. The economy of bolted tank fabrication, reliable assembly and proven quality are ideal for industrial liquid storage applications. Bolded tanks with welded hopper bottom tanks on structures, welded stainless steel silos, bolted coated carbon steel silos, welded aluminum silos with skirts and welded hopper bottom storage on legs are some common applications for chemicals. Columbian TecTank™ bolted tanks are commonly used for mineral storage applications, including crushed rock, coal, granular materials and dust. Our Columbian TecTank™ welded silos, bolted tanks and SealWeld™ aluminum silos have become the industry standard. For many years we have worked closely with the bolted tank manufacturers directly working out the details so you do not have to. We offer the most durable and maintenance-free coating available in bolted tank fabrication. The benefits of bolted tank construction. It doesn't matter how well the project's engineered, or what material it's made of , whether it's a bolted tank or welded tank. Our group is seeking methods and equipment to provide our customers with the most qualified and professional employees in construction, engineering, consulting services and foundations, with vast knowledge of welded tank storage and bolted tank storage. We decided to go with a bolted tank because the panels are prepainted and shipped here and because the factory epoxy finish is expected to last longer.