Grid grating, also known as steel grating, is a type of steel product made by crossing flat steel bars at certain intervals with cross bars (twisted square steel, square steel, round steel, flat steel, etc.), and welding them into a square grid pattern. Steel grating is primarily used for drain covers, structural platform plates, and stair tread plates. The cross bars are usually made of twisted square steel. Steel grating is generally made of carbon steel, with a hot-dipped zinc coating to prevent oxidation. Stainless steel can also be used. Steel grating features ventilation, lighting, heat dissipation, anti-slip, and explosion-proof properties.