Steel Gratings

Steel grating is an open-mesh steel panel made from parallel load-bearing bars, either welded or swage-locked (pressure-locked) to cross bars at a set spacing, which gives it a working surface that drains liquid, passes light and ventilation, and still carries a design load. That combination is why it replaces solid plate on walkways, platforms, and trench covers wherever standing liquid, gas buildup, or the weight of a solid steel plate would be a problem.

NLS sources both construction types. Welded grating, the more common type, welds bearing bars to cross bars at every intersection, giving high strength for a given depth, standard on industrial platforms and heavy-duty walkways. Swage-locked grating presses the cross bar into a serrated groove in the bearing bar without welding, giving a smoother top surface and slightly different load performance, sometimes preferred where the panel needs to be non-welded for corrosion or finish reasons. Bearing bar depth typically runs 25mm to 50mm depending on span and load requirement, in mild steel (painted or hot-dip galvanized) and stainless steel where the environment demands it. Reference standards are BS 4592 for grating flooring in the UK/Gulf market and ANSI/NAAMM MBG 531 where a project follows North American grating design practice.

On Saudi projects, steel grating shows up as walkway and platform decking on process plants, drainage and trench covers around pump rooms and utility corridors, and stair treads and mezzanine flooring where load and drainage both matter. Selection depends on the span between supports, the design load (foot traffic vs. vehicle or equipment loading), and the corrosion environment, so a panel schedule or a loading table gets a more accurate quote than a bare area figure.

NLS quotes grating against panel dimensions, bearing bar depth and spacing, material and finish, and the applicable loading standard, and returns a priced quote in USD, typically per square meter with cut-to-size or standard panel options depending on the layout.