What are the manufacturing differences between atmospheric vessels and pressure vessels?

In the manufacture of vessels, the standards for atmospheric vessels and pressure vessels are different. Due to the complexity of the applicable working conditions and the toxic and harmful working media, most of the pressure vessels are made of high-quality materials, while the working conditions of atmospheric vessels are superior. Therefore, carbon steel made of ordinary materials can basically meet the needs. In terms of physical and chemical inspection standards, pressure vessels are far higher than atmospheric vessels, while the latter are only spot checked according to a certain proportion, and the qualification level is lower than that of pressure vessels. The finished products do not need the supervision and inspection of the technical supervision department.