Use laser cutting for items below 20mm, and the cost is too high for items over 20mm.

The principle of laser cutting is to use laser to heat the steel plate, causing the steel plate to partially liquefy, and then use high-speed airflow to blow away the liquefied molten steel.

Because the laser energy is concentrated, the heating area is very small, and the temperature can quickly reach the melting point of steel. Therefore, the laser cutting speed is very fast, and the deformation caused to the steel plate is very small, and the cutting seams are also very thin. It is a kind of modern industrial precision processing.

But for steel plates above 20mm, ordinary laser cutting machines cannot cut them. The price of a good imported laser cutting machine is not affordable by ordinary manufacturers.