A 3D model of a pressure vessel is a precise digital representation of a container designed to hold gases or liquids at high pressures. This model provides an in-depth visualization of the vessel's structural components, including the cylindrical body, heads, nozzles, and internal supports, allowing for detailed analysis of its design and safety features. Engineers use these models to simulate how the vessel will perform under various operating conditions, ensuring it can withstand the pressures and stresses it will encounter in real-world applications. The 3D model also aids in optimizing the vessel's design for manufacturing, inspection, and maintenance, making it an essential tool in industries such as chemical processing, oil and gas, and power generation.