Heavy Duty & Extra Heavy Duty Welded Bar Gratings
Omkar Gratings Pvt Ltd (Omkareshwar Engineering) designs, fabricates, and exports industrial heavy duty and extra heavy duty welded steel bar gratings engineered to sustain severe rolling loads, high impact forces, and concentrated axle wheel traffic across international infrastructure projects.
Unlike conventional light platform walkways, our heavy-duty series utilizes thicker, deeper load-bearing flat bars manufactured from structural carbon steel or high-tensile alloys. Every panel is custom engineered to match clear trench spans, vehicle tire contact surfaces, and hydraulic discharge needs specified by EPC contractors and civil consultants.
Proven Engineering Record: The largest single extra heavy duty grating manufactured and delivered measured 3,100 mm × 3,100 mm, fabricated with 200 mm depth × 20 mm thickness load-bearing flats and weighed over 2.8 metric tons per panel.
Heavy Duty Load Classification & Profiles
Comprehensive profile classifications optimized for wheel loads, concentrated point stresses, and trench opening widths.
| Classification Category | Bearing Bar Profiles | Cross Bar Specification | Axle / Vehicle Load Rating | Typical Engineering Applications |
|---|---|---|---|---|
| Heavy Duty Type A | 40 × 5 mm, 50 × 5 mm | Φ8 mm / Φ10 mm Round or Twisted | Light to Medium Commercial (Up to 20T) | Warehouses, Forklift Corridors, Service Bays |
| Heavy Duty Type B | 65 × 5 mm, 65 × 8 mm | Φ10 mm / Φ12 mm Round or Twisted | Heavy Trailers & Trucks (40T Axle Load) | Highway Runoff, Freight Yards, Docks |
| Extra Heavy Duty Type C | 75 × 10 mm to 100 × 12 mm | 12 × 12 mm Twisted or Flat Tie Bars | Heavy Mining Trailers & Mobile Cranes (60Tâ100T) | Power Station Entrances, Metallurgical Plants |
| Super Heavy Duty Type D | 150 × 16 mm to 200 × 20 mm | Full Depth Welded Cross Ribs / Tie Flats | Aircraft & Heavy Industrial Machinery (100Tâ200T) | Airfield Taxiways, Wagon Tipplers, Bulk Handling |
Structural Integrity Built For Demanding Environments
Every heavy duty panel is fabricated to strict international fabrication and galvanizing criteria to eliminate structural deflection, weld fatigue, and corrosive degradation.
Full-Penetration Welded Strength
Bearing bars and cross members are joined with high-amperage robotic or semi-automated welds, preventing joint displacement under high-impact repetitive vehicular rolling loads.
120μm Hot-Dip Galvanizing
Subjected to an extensive chemical pickling process and hot-dip galvanizing to achieve up to 120 microns of zinc coating thickness, delivering 15 to 20 years of maintenance-free lifecycle.
Heavy Perimeter Banding
Equipped with flat bar edge banding, interlocking perimeter anchor lugs, and integrated curb angle frames to transfer wheel shock loads into surrounding reinforced concrete structures.
Certified Load Deflection Ratios
Fabricated strictly adhering to span-to-deflection ratios under 1/200, avoiding localized dishing and preventing vehicle suspension stress or pedestrian trip hazards.
High Water Hydraulic Discharge
The open-grid configuration allows rapid stormwater drainage and intake flow capacity, serving as storm runoff gully grates without hydroplaning risks for heavy air traffic.
Anti-Skid Serrated Top Surfaces
For wet, frozen, or petroleum-contaminated loading ramps, bearing bars can be serrated to maximize tire traction and prevent slippage under heavy industrial vehicle braking.
Actual Fabrication & Project Deliveries
Real-world heavy duty bar grating assemblies engineered to project drawings and exported to international sites.
Heavy Trench Cover Gratings
Engineered for high-volume urban stormwater canals and utility channels.
Deep Flat Bar Assemblies
Fabricated with 65mm to 100mm flats for container terminal dock bays.
Airfield & Runway Gratings
Certified for direct wheel passes of aircraft and transport tugs up to 200T.
Wagon Tippler Gratings
Massive 200x20mm steel profiles built for bulk mining hopper discharge.
Rigorous Testing For Global Infrastructure
Exporting to over 30 countries with full trace material documentation, third-party inspection compliance, and ocean-freight packaging.
Heavy Duty Grating Engineering FAQs
What load capacities can Omkar heavy duty gratings support?
Our heavy duty and extra heavy duty gratings are designed and fabricated to withstand extreme rolling wheel loads ranging from 40-tonne transport trailers to 200-tonne Jumbo-Jet aircraft, mobile crane traffic, container reach stackers, and wagon tipplers.
What bearing bar dimensions are available for heavy duty gratings?
Standard heavy duty profiles utilize bearing bars from 40 x 5 mm and 65 x 5 mm, while extra heavy duty specifications utilize flat bars ranging from 65 x 8 mm up to 200 x 20 mm, customized according to clear span and tire contact pressure.
What is the largest heavy duty grating panel fabricated by Omkar Gratings?
We have engineered and manufactured extra heavy duty single panels measuring up to 3,100 mm x 3,100 mm, fabricated from 200 mm depth x 20 mm thickness flats, each panel weighing in excess of 2.8 metric tons.
What corrosion protection standard is applied to heavy duty outdoor gratings?
Our heavy duty steel gratings undergo hot-dip galvanizing with up to 120 microns zinc coating thickness, delivering 15 to 20 years of maintenance-free performance in harsh marine, airport, and highway runoff environments.
Need Heavy Duty Gratings Designed for Your Load Conditions?
Send your trench spans, axle load criteria, or project drawings. Our engineering team will calculate the optimal bearing bar profile and provide certified structural data sheets.