A production line for welding prefabricated beams is a manufacturing process where prefabricated steel beams are welded together to form larger structures or building components. The production line typically consists of a series of machines and workstations that are designed to automate the welding and assembly process, allowing for faster and more efficient production. The process begins with the fabrication of individual steel beams, which are cut, drilled, and prepared for welding. The beams are then transported to the production line, where they are loaded onto machines that use automated welding techniques to join them together. The production line may also include machines for sandblasting, painting, and other finishing processes.