Metal Building MaterialsIt is a general term for materials that are composed of metal elements or mainly composed of metal elements and have metal characteristics. Metal building materials include products such as threaded steel, hot-rolled steel coils, and medium and thick plates.

Threaded SteelIt is a steel with spiral-shaped transverse ribs on the surface, commonly known as hot-rolled ribbed steel bars. Hot-rolled ribbed steel bars are divided into two gradesHRB335, and three gradesHRB400.