The application of wrought iron railings has a long history. In the 13th century, Europe crafted exquisite wrought iron products. During the Renaissance, wrought iron incorporated simplicity, elegance, and brightness, reaching its peak. In the 19th century, wrought iron railings began to be used as decorative architectural elements and gained widespread popularity. A century ago, they entered China, and with their unique artistic charm, environmental friendliness, and safety, they are increasingly being accepted and loved by people. In cities and countryside, in public buildings and private homes, whether modern or classical, beautifully crafted metal wrought iron railings of various forms can be seen everywhere.