steel grating 1>plain style,serrated style, and I bar type, etc 2>bearing bar size:20*3--100*10 3>bar ... ,well cover,trench cover,checkered gratings, grating ladder,fencesand handrail,etc for construction project, oil project, seaport, power plant, water plant ... steel structure platforms, stair treads, sidewalks, drainages and well covers etc. We can design and manufacture standard steel grating as per ...