Hartford Steam Boiler is an Independent Inspection Agency for the U.S. Department of Transportation approved to perform design reviews and certifications of UN Portable Tanks, Cargo Tanks, and Cylinders; inspection and testing of newly fabricated tanks and cylinders; periodic in-service inspections (internal and external visual inspections), leakage/pressure tests, thickness tests, and lining inspections. For facilities interested in fabricating high pressure tanks and cylinders for use in the United States, Hartford Steam Boiler can assist them with comprehending the relevant DOT specifications and the required support during the regulatory agency survey leading to customer's manufacturing certification.