Steel grilles are usually made of carbon steel, which can be prevented from oxidation by hot dip galvanizing. It can also be made of stainless steel. Steel grille has ventilation, lighting, steel grille drainage ditch, heat dissipation, hot-dip galvanized steel grille plate, anti-skid, steel grille plate, explosion and other properties. The steel grille is a kind of steel product with square lattice in the middle, which is made of flat steel which is arranged crosswise according to certain spacing and crossbar. The steel grille is mainly used for ditch cover plate, steel structure platform plate, steel ladder step plate and so on.