A pressure vessel is a container designed to hold gases or liquids at a pressure significantly different from the ambient pressure. These vessels are commonly used in various industries, including oil and gas, chemical manufacturing, and power generation, to safely store and transport materials under high pressure. Pressure vessels are built to withstand extreme conditions and are often made from strong materials like steel or composite materials. They must adhere to strict safety standards and regulations, such as those set by the American Society of Mechanical Engineers (ASME), to prevent failures that could lead to accidents or leaks.