Prefabricated Components Structure components refer to assembly parts that are produced and processed to a certain extent in the factory, with an independent structural system, and can be directly transported to the construction site for installation. Common steel structure prefabricated components include steel beams, steel columns, steel bridge beams, steel structure floor slabs, etc. According to their application and form, they can be divided into frame prefabricated parts, plate prefabricated parts, steel pipe prefabricated parts, etc. The advantages of this structure include high strength, light weight, good overall stiffness, and strong resistance to deformation. It is particularly suitable for constructing large-span, ultra-high, and ultra-heavy buildings. After prefabrication in the factory, it can greatly save installation and welding work on the project site. Steel prefabricated components can be used for various types of mountain bridges, railway bridges, highway bridges, urban light rail bridges, substations, substations, ship structures, elevators, offshore platform structures, etc