The flatbed semi-trailer is a versatile transport vehicle featuring a completely flat, open deck without sides or a roof, designed for carrying a wide variety of cargo such as steel coils, pipes, lumber, construction materials, machinery, and containers. Built on a multi-axle chassis (typically 2 or 3 axles) with a high-strength steel frame, it offers load capacities ranging from 20 to 60 tonnes. Flatbed trailers are popular for their easy loading and unloading from all sides, often equipped with lashing rings, twist locks, and removable side rails for securing different types of cargo. They are widely used in construction, logistics, steel transportation, and general freight.