Compared with the molding method, the spinning method has the following advantages:

　　1. Don’t need large molds, saving large mold costs;

　　2. The heads of different varieties and specifications can be produced only by replacing the inner roller according to several grades, so it is suitable for the production of multiple varieties and small batches of heads;

　　3. Less investment in equipment and tooling than the molding method;

　　4. The quality of the dish end is higher and the size is more accurate;

　　5. It can produce thin-walled large-diameter heads that are difficult to produce by molding. Processing stainless steel heads has great economic value.

　　There is a distinction between one-step method and two-step method for head forming without tyre spinning. One-step method is that the blank head is installed on the spinning machine at one time, and the head is formed by spinning; The drum press and the operating machine are pressed into a ball crown shape, and then turned on the spinning machine to form the head. The one-step method has the following advantages over the two-step method:

　　1. Covering a small area;

　　2. Fewer operators and high productivity;

　　3. less equipment;

　　4. Due to one-time card installation, the finished product of the head has high dimensional accuracy and small ovality.