How many manufacturing processes does a pressure vessel have?

We all know that a pressure vessel is a very powerful piece of equipment and is generally a large piece of equipment.It mainly refers to a closed device that contains gas or liquid and carries a certain pressure.Therefore, there will be a large number of applications in pharmaceutical, petrochemical, food, scientific research and other fields.So how many manufacturing processes does this type of pressure vessel generally have?
The manufacturing process of pressure vessels can generally be divided into: raw material acceptance process, scribing process, cutting process, rust removal process, machining (including planing, etc.) process, rolling process, assembly process, and welding process (product welding test plate) , non-destructive testing process, hole opening and scribing process, general inspection process, heat treatment process, pressure test process, anti-corrosion process.