Among music bell tin products, the more common shape is round music bell tin products, and there are also special shaped tin cans, such as polygonal tin cans, oval tins and trapezoidal tins. When choosing the appearance of music bell tin products, factors such as the size specification and shape of the packaged object, as well as cost should be considered. The round iron can is easier to manufacture than other shapes, saves material in the manufacturing process, and has the largest volume of all can containers, but its shape has no characteristics. Due to the unique shape of the special-shaped tank, the manufacturing difficulty is high, the labor cost is high, and the consumables are large, so the overall cost is high. Taking into account the principle of economy, when choosing the can type, the round music bell tin products should be selected as much as possible, and the special shape iron can can only be selected under special requirements.

The specifications of music bell tin products, for general three-piece cans, can be determined according to the standard specification series. For tin cans with special requirements or unique appearance, the specifications and models can be specified according to the specific requirements. The process for determining the size of a three-piece can is as follows:
(1) Determine the shape of the can according to the packaging requirements of the packaged goods;
(2) Calculate the required capacity according to the packaging quantity of the packaged goods, and calculate the tank capacity according to the filling rate of the packaged goods (about 85%~95%);
(3) Finally, according to the calculation results, select the specifications, models and specifications of the storage tank.
music bell tin products are divided into:
1. According to different structures, it can be divided into three-piece cans and two-piece cans.
2. According to different materials, it can be divided into tinplate cans, steel cans and aluminum cans.
3. According to the different tightness of the tank, according to the size of the internal pressure, it can be divided into a pressurized tank and a vacuum tank.