... 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 ... The products most commonly used for Belt corridor, storage shelf,Attic panel, trestle, guardrail, sunshade gate, etc. Notes ... In the case of stair treads, please specify its type, length, width, quantity and surface treatment. 4. ...