Grid grating, also known as steel grating, is a type of steel product made by crossing flat steel bars at specific intervals with transverse bars (twisted square steel, square steel, round steel, flat steel, etc.) and welding them into a grid pattern. Steel grating is primarily used for drain covers, structural platforms, and stair treads. The transverse bars are typically twisted square steel. The steel grating is usually 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.