SS Pressure Vessel is a carefully fabricated; the enclosed container is designed to hold either gases or liquids at a different pressure level than the surrounding air pressure. SS Pressure Vessel is used to produce pressure vessels because of its notch toughness, flexibility, tensile strength, and fatigue characteristics. It is used for above-ground storage tanks, which are used to store fuels, chemicals, and petrochemicals. These below-ground storage tanks are used for storing chemicals and fuels partially stored beneath the ground.