Made from a certain size of plain carbon flat steel, stainless steel, brass plate, aluminum plate through processes such as slotting (holes), plugging, welding, and finishing. Intercalated steel grating has many advantages such as lightweight, high strength, anti-corrosion, maintenance free, and beautiful appearance. It is widely used in civil and commercial buildings, theaters, subways, urban railways and other municipal engineering fields. It can be used for ceilings, indoor and outdoor decoration, platform walkways, ventilation windows (wells), advertising signs, various cover plates, etc.