A skirt assembly is a structural support component used in vertical pressure vessels, reactors, and storage tanks to provide stability and distribute weight evenly. Typically made of carbon steel or stainless steel, the skirt is welded to the bottom of the vessel and extends downward, anchoring the equipment securely to the foundation. It allows for thermal expansion, minimizing stress on the vessel, and provides access for piping, insulation, and maintenance. Skirt assemblies are commonly used in industries such as oil and gas, chemical processing, and power plants, ensuring the safe and efficient operation of large vertical vessels under varying temperature and pressure conditions.