Heavy Duty Bar Grating

Bar-grating-Heavy-Duty Heavy Duty Welded Bar Grating

Certain applications require a maximum-strength bar grating that can accommodate heavier loads from rolling vehicles. Fortunately, you can find heavy-duty bar grating that has the ability to handle heavy, bulky loads, even after many years of heavy use.

Marco Specialty Steel offers heavy-duty welded bar grating in various span lengths that are designed, engineered, and built for the toughest, most demanding tasks. We also have an in-house fabrication shop to be your turnkey bar grating solution.


Our sturdy heavy-duty bar grating is resistance welded to ensure maximum strength, durability and safety. We implement a specially developed automated electric/hydraulic welding technique that combines high pressure and high temperature to permanently fuse the bearing and cross bars together. This creates a solid, permanent joint that can withstand repeated heavy loads. We offer both heavy-duty carbon steel bar grating and stainless steel bar grating to meet our customers’ needs.

Custom Fabricated Heavy Duty
Heavy Duty Vessel Internal
Heavy Duty Bar Grating

It is recommended that the grating be load banded when rolling wheel loads are used to provide added lateral strength.

  • Standard widths:  2′, 3′, and 4′ in 20′ lengths.
  • Standard bearing bars: 1/4″, 5/16″, and 3/8″ thick.
  • Bars range from 1″ to 8″ deep

Heavy-Duty Bar Grating Table with printable pdf links

All measurements are center to center of bearing bars.

HEAVY DUTY STEELPart NumberBearing Bar Size
Heavy Duty Welded15-H-4

When Should You Choose Industrial Heavy Duty Welded Bar Grating?


In general, you should choose heavy-duty welded-steel bar grating for use in heavy-load areas such as highways, parking lots, airfields, bus and trucking terminals, and industrial plants. It’s the ideal choice for products such as driveways, heavy-vehicle tunnel ventilation grilles, loading docks, ramps, and any other places where vehicles roll over grating on a repeated basis. It is also a smart idea to load-band the grating in these situations, as this will increase the grating’s lateral strength. Grating with thicker serrations can provide extra traction for rolling loads.

We Provide a Custom Heavy-Duty Bar Grating Solution for Your Company

Heavy-Duty Drain Cover

While our stock heavy-duty bar grating offerings will meet the needs of most of our customers, we also understand some companies have unique applications that may require a specially designed product. Our facility includes an in-house fabrication department where we can develop the customized product you desire. Just about any bar size and depth can be made to order. We are also one of the few heavy duty grating suppliers that is capable of producing extra-large grates. We can even work with your existing blueprints and drawings.

About Marco Specialty Steel

Marco Specialty Steel has been providing fast, reliable, high-quality steel and aluminum solutions including industrial bar grating since 1992. Since that time, our goal has been to provide the best, most customer-focused services, regardless of the project’s size or scope. We operate out of a state-of-the-art 35,000-square-foot facility located on nearly 10 acres in Houston, TX, which enables us to handle all types of projects with speed and efficiency. All of our heavy-duty bar grating is manufactured and fabricated to meet the highest NAAMM standards for quality and performance.

Contact Us to Learn More About Your Heavy-Duty Grating Options

We are a trusted industrial bar grating supplier. Discover for yourself why so many companies in industries such as petrochemical, transportation, and construction have made Marco Specialty Steel their one-stop source for all their heavy-duty bar grating needs. Contact us to learn more about our heavy-duty grating product offerings today. And be sure to let us know about your specific customization requirements.

Marco Specialty Steel: Quality. Speed. Reliability.