Omkar Gratings manufactures heavy-duty expanded metal gratings by simultaneously slitting and expanding solid steel plate into rigid, continuous diamond-shaped mesh structures. Unlike assembled bar gratings, expanded grating features no welds, joints, or woven intersections, resulting in an unbroken span of steel that eliminates internal joint fatigue and localized stress concentration.
By expanding raw sheet up to ten times its original dimension, this fabrication technology achieves up to an 80% weight reduction per square meter compared to solid plate. It maintains unmatched load-bearing capacity, deflection rigidity, and continuous lateral load transfer across industrial catwalks, ramps, conveyor galleries, and machinery mezzanines.
Manufactured from structural carbon steel (IS 2062 / ASTM A36), stainless steel (AISI 304, 316, 316L), and structural aluminum alloys (5052-H32 / 6061-T6).
Flexible diamond pitches with Short Way of Diamond (SWD) from 20 mm to 60 mm and Long Way of Diamond (LWD) from 50 mm to 150 mm engineered to project spans.
Heavy hot-dip galvanization conforming to ASTM A123 / ISO 1461, corrosion-resistant red oxide zinc chromate primers, and durable polyester powder coating.
Panels custom sheared, perimeter banded with angle or flat bars, and bundle packed with export moisture barriers for port delivery across 40+ nations.
Selected technical data for our most requested walkway and heavy-load industrial expanded metal grating patterns. Custom strand dimensions and opening sizes are fabricated to structural engineering calculations.
| Pattern Code | Nominal Weight (kg/m²) | SWD × LWD (mm) | Strand Width (mm) | Plate Thickness (mm) | Open Area (%) | Typical Safe Span (mm) | Recommended Applications |
|---|---|---|---|---|---|---|---|
| OMG-EMG-314 | 14.8 | 33.8 × 133.4 | 5.5 | 4.5 | 68% | 750 – 900 | Light industrial catwalks, pedestrian ramps, ventilation covers |
| OMG-EMG-418 | 18.5 | 34.0 × 135.0 | 6.4 | 5.0 | 64% | 900 – 1050 | Conveyor walkways, power plant boiler galleries, oil rig platforms |
| OMG-EMG-522 | 22.6 | 38.1 × 133.4 | 7.5 | 6.0 | 61% | 1000 – 1200 | Heavy plant maintenance floors, chemical facility walkways |
| OMG-EMG-628 | 28.4 | 40.0 × 150.0 | 9.0 | 6.0 | 56% | 1200 – 1400 | Mining process walkways, quarry screens, heavy machinery access |
| OMG-EMG-SS316 | 19.2 | 33.8 × 133.4 | 6.0 | 4.5 | 66% | 900 – 1100 | Marine vessels, coastal installations, pharmaceutical wash bays |
| OMG-EMG-AL60 | 7.6 | 34.0 × 135.0 | 7.0 | 6.0 | 65% | 600 – 800 | Weight-critical offshore skids, mobile equipment decks, ship masts |
* Note: Load tables are based on uniform distributed loads (UDL) of 5.0 kN/m² with maximum span deflection ≤ L/200. Custom banding frames and toe kicks are available upon request.
Choose the optimal profile based on foot traction requirements, wheeled trolley operations, or architectural safety specifications.
Direct from the expanding machine, the diamond strands and bond knuckles lie at a uniform upward angle relative to the plane of the sheet. This structural configuration delivers maximum structural depth and three-dimensional anti-skid traction in every walking direction.
Standard expanded grating is passed through a cold roll reducing mill, flattening the bond knuckles and strands to create a smooth, level horizontal surface. While slightly reducing the thickness, it provides a stable floor surface suitable for light wheeled carts, hand trucks, and security gates.
Omkar Gratings expanded metal solutions are widely specified across capital projects in heavy manufacturing, energy production, marine transit, and mining extraction.
Continuous elevated inspection platforms along conveyor belts, boiler housings, paper mills, and refinery distillation columns where low tare weight and drainage are paramount.
Heavy gauge carbon steel expanded mesh fitted with perimeter edge framing used as durable screening panels, vibratory sieves, and slurry drainage decks.
Stainless steel AISI 316 and marine grade aluminum alloy expanded panels installed on offshore oil skids, cargo holds, and shipboard ladder access walkways.
Custom fabricated expanded metal stair treads equipped with punched visibility nosing and welded end carrier plates, built to international occupational safety codes.
Anti-climb, cut-resistant expanded steel barrier mesh designed for high-security facilities, electrical substation perimeters, and railway electrification rights-of-way.
Self-ventilating machine fly-wheel guards, hazardous zone safety partitions, and vehicle maintenance pit covers that allow free light transmission and air circulation.
Every shipment is subjected to strict dimensional, metallurgical, and surface inspection protocols before ocean dispatch.
All coils and plates are sourced with authentic EN 10204 Type 3.1 Mill Test Certificates verifying tensile strength, yield point, and exact chemical composition (carbon, manganese, chromium, nickel).
In-house hydraulic test presses verify safe load-span performance under both uniform distributed loads (UDL) and point wheel loads in strict adherence to NAAMM EMMA 557 and BS 4592-2 standards.
Hot-dip galvanizing per ASTM A123 / ISO 1461 guarantees an average zinc coating thickness exceeding 85 microns (610 g/m²), verified by digital magnetic thickness gauges with zero pinholes.
To ensure prompt engineering evaluation and precise CIF/FOB pricing, please specify the following eight parameters in your inquiry: