Elliptic head is also called elliptic head and elliptic head is a head composed of two parts: a rotating elliptic sphere and a cylindrical straight section.The mechanical properties of elliptic head are second only to hemispheric head, but better than dish head.As the depth of ellipse head is between hemispherical head and dish head, the requirements for stamping equipment and mould and the manufacturing difficulty are also between the two, that is, easier than hemisphere head and more difficult than dish head.In recent years, it is convenient to make large diameter elliptic head by using spinning process.Elliptical head is widely used in medium and low pressure vessels due to its good comprehensive performance.Oval head is widely used in petroleum, electronics, chemical industry, medicine, light textile, food, machinery, construction, nuclear power, aerospace, military industry and other industries.