Introduction: Plate rolling forms the curved shell sections used in cylindrical tanks and pressure vessels, while the finished equipment also depends on design, materials, welding, inspection, testing, and acceptance records. A flat plate becomes part of a cylindrical tank or pressure vessel after controlled forming gives it the required curvature. Plate rolling machines perform this central manufacturing task by passing the plate through rolls until a shell section develops. The formed section then moves through alignment, longitudinal joining, circumferential assembly, inspection, testing, and documentation. Storage tanks and pressure vessels may share a cylindrical shape, yet their technical obligations can differ substantially. Service conditions, internal pressure, temperature, corrosion exposure, materials, joint design, examination methods, and applicable standards influence the completed equipment. Understanding the forming role of plate rolling helps separate component geome...