... TO I BAR STEEL GRATINGS:As to I-type steel grating, bearing bar is in the form ... with the feature of material-saving.I Bar Type Steel Grating is used where high strength and ... corridor, storage shelf,Attic panel, trestle, guardrail, sunshade gate, etc. Notes: common welding standard: single-side full ... In the case of stair treads, please specify its type, length, width, quantity and surface treatment. 4. ...