Various molds such as standard oval head (2:1 positive semi-ellipse) and 10% dish head. Please distinguish between the use of two different shapes of heads according to the design of the equipment, the conditions of use, which are beneficial to quality and cost management, especially for atmospheric pressure vessels such as food, pharmaceuticals, water treatment, and underground storage tanks. We recommend using them. 10% dish-shaped head manufactured by cold stamping or spinning method. Its advantages: 

① If the overall length of the device has been specified, the use of 10% dish-shaped head will increase the capacity compared to the standard oval head. 

②Because the curved surface of the 10% dish-shaped head is smoother than the 2:1 elliptical curved surface, it is easy to install the fixing plate and the bracket on the head, and the work efficiency is high. 

③Because the 10% dish-shaped head has a smaller processing degree than the standard elliptical head, the forming quality is good when the large-diameter 10% dish-shaped thin-walled head is produced, and the appearance is beautiful. 

④ If it is a head with the same inner diameter and the same plate thickness, the blanking size of the 10% dish is smaller than the standard elliptical head, which can save material.