... , stainless steel 3.fix by welding or bolts Galvanized steel stair tread: Material: mill steel black, hot dip Galvanizing and ... , platform ,steel structures, stair tread, well cover, trench cover, sump cover,compound gratings, storage shelves, ladder, fences and handrail so on for ... nosing, easy be installation, teardown and can be skid. Notes: Stair tread may be of any types of grating,the size ...