The manufacturing process of steel drums involves a wide range of technical fields. The following processes are usually required: sheet unwinding and leveling → shearing and unloading → barrel welding → barrel flanging → barrel body type → roll package distribution → barrel bottom cover forming and pre-rolling → surface treatment → inner surface coating and Painting on the outer surface → printing.
Steel drums have been used as the main paint packaging container for more than 100 years. In the years of use, steel drums have become a complete series as well as product standards and specifications. Although the steel drum has been evolving over time, the basic design has remained basically the same. Mature production and complete production lines are a huge obstacle to the development of any subsequent packaging form.
However, steel drums also have some shortcomings. For example, steel drums are mainly round drums, and some smaller drums have lifting rings. However, the shape of the steel drum is relatively simple, and it is difficult to make more patterns. Different brands of paints are not easy to form differentiated packaging on the packaging. Although the development of printing technology can already print beautiful patterns on the surface of steel drums, steel drums mostly have roller ribs on the barrel, which affects the delicateness and display effect of the pattern. In addition, in the process of use, it is difficult to use the paint once every barrel. Therefore, the coating package requires better sealing. The sealing performance of the lid of the open steel drum is general, which is also one of the unsatisfactory dead pockets of the steel drum.