Automotive sheet metal cannot do without these welding processes. Gas shielded welding, coating welding, electric welding, plasma cutting and even resistance suspension spot welding are all necessary, but they are not difficult. Practice makes perfect, and it won't take long to master it. Welding machine is even more essential. Without a welding machine, it is impossible to splice the sheet metal parts together! Now automotive sheet metal has a bright future and can make a lot of money. Wish you success!