Structural steel is a type of construction composed of steel materials and is one of the primary types of building structures. It is mainly composed of steel beams, columns, trusses, and other components made from sections and plates, and is treated with processes such as silanization, pure manganese phosphate conversion, water washing and drying, and galvanizing for rust prevention. Components or parts are typically connected using welds, bolts, or rivets. Due to its light weight and ease of construction, it is widely used in large factories, stadiums, skyscrapers, bridges, and other fields. Structural steel is prone to rust, so it usually requires rust removal, galvanizing, or painting, and regular maintenance is necessary.