Custom Expanded Metal Walkway Grating
Heavy-duty open flooring for industrial platforms, stairs and access systems
Expanded metal grating is a raised, one-piece open metal panel designed for traction, drainage and ventilation. We manufacture custom expanded steel grating and walkway panels for contractors, fabricators, distributors and equipment builders.
Project drawings are recommended. Final pattern and panel selection must consider material, load type, clear span, support spacing, bearing direction, deflection criteria, finish and fastening method.
What Is Expanded Metal Grating?
Expanded metal grating is made by slitting and stretching metal plate into a raised diamond pattern. The strands and bonds remain part of one sheet, creating an open walking surface without welded cross bars. The raised profile supports traction, drainage, ventilation and debris passage.
It is used where project buyers need an economical alternative to solid plate or other open-flooring systems. Product suitability must be confirmed against the required load, span, support layout, fastening method, corrosion exposure and applicable project standards.
- Raised surface for industrial walkway traction and drainage.
- One-piece construction with no welded bearing-bar intersections.
- Custom panel size, pattern, material, finish and edge treatment.
- Suitable for framed panels, clips, supports and fabricated assemblies.
Expanded Metal Grating Applications
Typical applications include factory walkways and flooring, service platforms, catwalks, stair treads, maintenance access, mezzanine flooring, trailer and loading ramps, conveyor access, drainage areas and equipment platforms.
Expanded Metal Grating vs. Bar Grating
Expanded metal grating is formed from a single plate with raised diamond openings. Bar grating uses bearing bars and cross bars. Selection depends on load, span, open area, traction, weight, drainage, fabrication and the governing project specification.
Expanded Metal Grating Sizes and Load Review
Search terms such as 3#, 4#, 3.14 and 4.27 may refer to market-specific grating patterns or weight designations. Always provide the complete reference standard, material, panel size, span and load criteria so the requested product can be verified.
How to Specify Expanded Metal Grating
For an accurate quotation, specify the material, grating pattern, SWD, LWD, strand dimensions, overall thickness, panel width and length, bearing direction, clear span, support spacing, design load, deflection limit and finish.
- SWD: Short way of the diamond opening.
- LWD: Long way of the diamond opening.
- Overall thickness: Finished raised grating depth.
- Strand dimensions: Width and thickness of the load-carrying strand.
- Bearing direction: Orientation of the long-way diamond relative to supports.
- Project conditions: Panel size, span, support spacing, load and fastening.
Expanded Metal Grating Specifications
| Product | Expanded Metal Grating / Expanded Metal Walkway Grating / Expanded Steel Grating |
|---|---|
| Material | Carbon steel, galvanized steel, stainless steel and aluminum according to project requirements |
| Profile | Heavy-duty raised expanded metal grating |
| Custom Parameters | Pattern, SWD, LWD, strand width, strand thickness, overall thickness, panel size and edge condition |
| Engineering Inputs | Clear span, support spacing, bearing direction, uniform or concentrated load, deflection limit and fastening method |
| Surface Options | Mill finish, painted, powder coated, pre-galvanized or hot-dip galvanized after expansion |
| Supply Forms | Standard panels, cut-to-size panels, framed sections, stair-tread components and fabricated assemblies |
| Applications | Walkways, platforms, catwalks, stair treads, ramps, access flooring and maintenance areas |
| Export Packing | Waterproof protection, separators, strapping, pallets, steel frames, wooden cases and project labels |
Expanded Metal Grating Load Table
A generic load table should not be used without confirming the exact pattern and support conditions. Load capacity and deflection depend on material, strand geometry, overall thickness, bearing direction, clear span, panel width, support spacing and load type. Send these inputs for project-specific review.
Material and Finish Selection
Carbon steel is commonly selected for economical indoor or coated applications. Galvanized steel supports outdoor corrosion protection. Stainless steel is used for demanding hygiene or corrosion conditions, while aluminum reduces panel weight. Final selection should follow the project environment and engineering requirements.
Product Gallery
Representative heavy-duty raised expanded metal patterns are shown below. Final grating pattern, material, panel size, finish, framing and support details are produced according to the confirmed project specification.
Expanded Metal Grating Buying Guide
- Send project drawings, support layouts and the required reference standard.
- Confirm uniform or concentrated load, clear span and acceptable deflection.
- Identify the bearing direction and how panels will be supported and fastened.
- Select carbon, galvanized, stainless or aluminum grating for the service environment.
- Provide panel quantity, fabrication details, destination port and packing requirements.
Expanded Metal Grating FAQ
What is expanded metal grating?
Expanded metal grating is heavy-duty raised expanded metal used as open flooring for industrial walkways, platforms, catwalks, stair treads and access areas. It is formed from one piece of plate with no welded cross bars.
What materials are available for expanded metal grating?
Common materials include carbon steel, galvanized steel, stainless steel and aluminum. Selection depends on load, corrosion exposure, panel weight, fabrication, maintenance and project standards.
Can you provide an expanded metal grating load table?
Load and deflection depend on the exact pattern, material, strand dimensions, overall thickness, bearing direction, clear span, panel width, support spacing and load type. Send the project conditions for review rather than relying on an unrelated generic table.
What is the difference between expanded metal grating and bar grating?
Expanded metal grating is stretched from one plate into raised diamond openings. Bar grating is assembled from bearing bars and cross bars. The correct choice depends on load, span, traction, drainage, open area, weight and project specifications.
Is galvanized expanded metal grating suitable for outdoor walkways?
Galvanized steel is commonly selected for outdoor corrosion protection. Final suitability depends on the exposure environment, coating specification, drainage, fabrication damage, maintenance and required service life.
What information is needed for pricing?
Send the material, pattern or reference designation, panel dimensions, bearing direction, clear span, support spacing, load and deflection requirements, finish, quantity, fastening method, application and destination port.
How do you pack expanded metal grating for export?
Packing options include waterproof protection, separators, strapping, pallets, steel frames, wooden cases and project labels. The plan is selected according to panel dimensions, coating protection, shipment method and destination.