Grid grating, also known as steel grating, is a type of steel product made by crossing and welding flat steel bars at certain intervals with transverse bars (twisted square steel, square steel, round steel, flat steel, etc.) to form a square grid pattern in the middle. Steel grating is mainly used for drain covers, structural platform panels, and steel ladder tread plates. The transverse bars are usually twisted square steel. Steel grating is generally made of carbon steel, with a hot-dipped galvanized surface to prevent oxidation. Stainless steel can also be used. Steel grating offers ventilation, lighting, heat dissipation, anti-slip, and explosion-proof properties.