Bridge guardrails are safety protection facilities specially designed for both sides of various bridges (highway bridges, municipal bridges, pedestrian bridges), with the core functions of "high collision resistance, fall prevention, and wind resistance". They are made of high-strength substrates such as galvanized steel and stainless steel, reinforced and welded, and treated with anti-corrosion. It can resist vehicle collisions, prevent people/objects from falling under the bridge, and adapt to the high-altitude, windy, and humid environment of the bridge. At the same time, it can be integrated with the architectural style of the bridge through its shape, and is a core facility to ensure the safety of bridge traffic. It is widely used in urban cross river bridges, elevated bridges, pedestrian overpasses, and other scenarios.