The dish end, also known as the beveled spherical end, is composed of a spherical surface, a straight edge cylinder of a certain height, and a transition section connecting these two parts, where the radius of curvature is significantly smaller than the spherical radius. The dish end forms a continuous curved surface, and at the junction of the three parts, there is a sudden change in the radius of curvature of the meridians, resulting in bending stress due to the change in curvature. The superposition of bending and tensile stresses makes this section of the stress stand out compared to other parts. Compared to the elliptical end, the stress distribution is not as uniform, but it is easier to process, making it less ideal for engineering use. However, when it is difficult to process the mold for the elliptical end, the dish end is used as a substitute.