... of non-serrated gratings.MaterialsMild steel (Low carbon steel ASTM (A36) or Q235), stainless steel 304 or 316.Surface treatmentUntreated, ... BS729Applicationplatform, floor, walkway, fence, They widely used in steel structure platforms, stair treads, sidewalks, drainages and well covers ... etc. We also supply standard steel grating and non-standard grating as customers? demands. ...