... L-- pressure-locked C-- socket-welding ISO900 galvanized flat bar grating Packaging Detail:seaworthy,by pallet or ... tread, well cover, trench cover, compound gratings, storage shelves, ladder, fences and handrail so on for ... Usage: The products most commonly used for Belt corridor, storage shelf,Attic panel, trestle, guardrail, sunshade gate, etc ... every 4 bearing bars. galvanized flat bar grating