The three-piece metal can industry presents a homogenization and low-cost competition. This product is mainly used for filling canned beer. In addition to the basic functions of conventional metal cans, it imposes extremely high requirements on the integrity of the inner coating film, and meets the requirements of the water rinsing sterile process after sealing, thereby making the food commercially sterile, extending the shelf life, and meeting the product launch standards. This product is formed by mechanical expansion, and the can volume is of 5L shared type, which can be suitable for friends gathering, banquet and other scenes.