Mild steel grating
Regarding surface treatment, hot-dip galvanizing, paint or other anti-corrosive coating are available, of which hot-dip galvanizing is generally recommended as hot-dip galvanizing makes mild steel grating more anti-corrosive. GMS grating, also called galvanized steel grating is most commonly used. There are burrs on surface of mild steel grating after hot-dip galvanizing which have to be removed.
People usually use galvanized grating as drain grates or storm drain cover together with a steel frame. With steel bots or lifting keys, steel grate is easy to be lifted and maintained. HY designs a V-shape steel grating&frame, which is consisted with two gratings and frames, welding them together to form a V shape. This is a special product used for a specific project. And steel grate is also made to steel stair treads in other areas.