Grid grating, also known as steel grating, is a type of steel product made by crossing and welding flat steel bars at specific intervals with transverse bars (twisted square steel, square steel, round steel, flat steel, etc.) to form a square pattern in the center. It is primarily used for drain covers, steel structure platform panels, and stair treads. The transverse bars are usually twisted square steel. Steel grating is generally made of carbon steel, with a hot-dipped zinc coating on the surface to prevent oxidation. Stainless steel can also be used. Steel grating features ventilation, lighting, heat dissipation, anti-slip, and explosion-proof properties.