C/Z/U purlins are structural components used in the construction industry to provide support and stability to the roofs and walls of buildings. They are typically made of cold-formed steel and have a shape resembling the letters C, Z, or U, depending on their cross-section. Item NO.: Steel C&Z&U Beam Order(MOQ): 1 ton Payment: FOB Product Origin: China Color: Galvanized Shipping Port: Xiamen,China Lead Time: 10-15day