While metal welding and fabrication tend to be used interchangeably, there are some differences between the two verbs. Fabrication is a more general term that refers to turning a piece of metal into a project, whereas welding can exist as a component within that overall project.
If you're looking to protect and visually enhance sheet metal parts' surfaces, you might consider sheet metal powder coating.
How sheet metal parts are assembled goes a long way in defining a metal manufacturer. Correctly assembled products are the foundation of a metal manufacturer. If a product is assembled poorly, the longevity and functionality of the product are immediately compromised.
Product fulfillment revolves around the practice of pick pack ship (PPS)