The new Santana sheet metal thickness is 0.7mm. Through measurement, it is known that the thickness of the sheet metal of the 21 Santana is 0.7mm. Sheet metal is a technical means of automobile repair. In this aspect, automobile sheet metal is equal to automobile sheet metal repair, which means that the body of the car must be repaired after a collision, that is, in addition to All work except for the anti-corrosion and decorative painting of the car body. Analysis of automobile body damage, measurement of automobile body, shaping, stretching and correction of automobile body sheet metal, stress relief welding, assembling and adjusting automobile body accessories, etc.