The application of wrought iron railings has a long history. In the 13th century, exquisite wrought iron products were created in Europe. During the Renaissance, wrought iron incorporated the styles of simplicity, elegance, and brightness, reaching its peak. In the 19th century, wrought iron railings began to be widely used as decorative architectural elements. A century ago, they entered China, gaining popularity due to their unique artistic charm and environmentally friendly, safe characteristics. Urban and rural areas, public buildings and private homes, modern or classical, can all be seen with various beautifully crafted metal wrought iron railings.