The process of tinplate includes: pickling - cold rolling - annealing - smoothing - trimming - tin plating - oiling.

Pickling: 1 is for the oxides on the surface of the original plate 2 is for edge trimming and checking whether there are any defects in the original plate.

Cold rolling: The thickness is mainly made thinner by pressure. This can be done at room temperature.

Annealing: This process is mainly to adjust the corresponding hardness according to the customer's use and requirements. There are two ways: 1) Bell furnace annealing 2) Continuous annealing. The higher the normal hardness, the more continuous annealing is used.

Flattening: There are mainly two aspects: 1) Inspection of surface condition 2) Flatness of plate shape.

Trimming: Small is cut 5mm, normal cut 7.5mm.

Tin plating: Consider the tin plating environment such as concentration, humidity, etc.

Oiling: Apply DOS oil under normal circumstances. To prevent sticking or rusting. But the control of the oil point above is more difficult.