First, it is the technical means of repairing cars. In this respect, automotive sheet metal is equal to automotive sheet metal's repair, which means that the car body should be repaired after the collision, that is, all the work except the anti-corrosion and decorative spraying of the car body. For example, analysis of body damage, measurement of body profile, shaping of body sheet metal, stretching correction, stress relief welding and assembly adjustment of body accessories.

Second, sheet metal is a job of auto repair, mainly aimed at the appearance of the car body. The replacement, repair, rectification and painting of external body (such as bumper, door, etc.) also belong to the category of sheet metal work. There is a specific division of labor inside sheet metal, which covers all the above contents in a broad sense, while sheet metal in a narrow sense only replaces the external body, which is done by the general maintenance personnel who repair the shape of the car by welding, shelving and so on. In a broad sense, sheet metal also has putty, polishing and painting.

I hope it helps you.