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