First of all, it depends on what kind of welding industry you are, such as electric power, chemical industry, pressure vessel and the most basic mechanical industry. The technological process is also different, but the basic process is roughly as follows: blanking (in some places, it is divided into cutting, shaping and shearing, etc. ) → assembly (including basic welding assembly and sheet metal production) → product welding (this kind of welding is layered, and in many cases it has to alternate with the assembly process several times) → post-welding treatment (including post-welding heat treatment, failure, cleaning, etc.). This is just a rough process, and the specific situation needs specific analysis. Welcome to give directions! !