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

Acid washing: 1. For the oxide on the surface of the original board. 2. For cutting edges and checking for defective original boards.

Cold rolling: mainly through pressure to make its thickness thinner. This can be done at room temperature.

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

Flatness: mainly in two aspects: 1) inspection of the external condition and 2) flatness of the board shape.

Edge cutting: The minimum cut is 5mm, and normally cut 7.5mm.

Tin plating: Consideration should be given to factors such as concentration, humidity, and the environment for tin plating.

Oil coating: Under normal circumstances, apply DOS oil. To avoid sticking or rusting. But the control of the oil points above is quite difficult.

Ingredients: From bottom to top, the bottom layer is the substrate - iron tin alloy - tin - chromium oxide - oil film.