Heavy-Duty Carbon Steel Grating, made from high-strength steels (ASTM A36/A572, Q235B/Q355B), is welded for extreme loads up to 1000 kN/m², supporting H-20/H-25 trucks, heavy forklifts, and aircraft. It features deep serrated bearing bars, customizable panels up to 3000×6000 mm, hot-dip galvanizing for corrosion resistance, and full compliance with ASTM/EN/OSHA standards. Ideal for industrial floors, ports, airports, mining, and bridges, it offers superior durability, slip resistance, and easy installation.
Carbon steel – heavy-duty steel grating
1.Product Overview
Heavy-Duty Carbon Steel Grating is engineered for industrial, municipal, and transportation projects where standard grating cannot meet structural requirements. Using high-strength carbon and low-alloy steels (ASTM A36 / A572 / Q235B / S275JR), the grating supports extreme static and dynamic loads, including H-20/H-25 trucks, heavy forklifts, and aircraft wheel loads. The panels are fabricated via resistance welding or manual welding to ensure maximum joint integrity. Applications include industrial floors, airport tarmacs, heavy-duty logistics zones, and public infrastructure requiring long-term reliability.
2.technical Parameters
| Category | Parameter | Specification / Range | Engineering Notes |
| Material | Steel Grade | ASTM A36 / A572 / EN S235JR/Q235B/Q355B | Selected for structural strength and high-load industrial applications |
| Manufacturing | Production Method | Welded / Press-Locked / Riveted | Welded panels recommended for heavy loads; press-locked allows slight expansion; riveted for vibration-sensitive areas |
| Bearing Bars | Bar Type | Rectangular / Serrated / I-Bar | Serrated bars recommended for slip resistance in factory floors and warehouse platforms |
| Depth × Thickness | 40×5 mm – 200×10 mm | Larger sizes recommended for vehicle or forklift load areas | |
| Bar Spacing (C/C) | 12.5 / 15 / 20 / 30 / 34 / 38 / 40 / 50 / 60 mm(or custom) | Engineering reference; final spacing per approved project drawings | |
| Cross Bars | Bar Type | Round / Flat / Twisted Square | Twisted square for improved drainage and stiffness |
| Bar Size | 6 / 8 / 10 / 12 / 20mm | Standard industry sizes | |
| Bar Spacing | 50 / 76 / 100 mm | Selected based on open area and load requirements | |
| Panel Size | Width | 300 – 3000 mm | ≤3000 mm recommended for transport; custom sizes available |
| Length | ≤6000 mm | Panels can be cut for stair treads, platforms, or trench covers | |
| Thickness Tolerance | ±5 mm | Ensures uniform load performance | |
| Structural | Design Load | 50 – 1000 kN/m² | Pedestrian, vehicle, and machinery traffic; check span and load tables |
| Max Span | 100 – 2000 mm | Depends on bar size and cross bar layout | |
| Deflection Limit | L/200 – L/400 | Standard engineering practice for heavy-duty panels | |
| Surface | Finish Options | Hot-Dip Galvanized / Painted / Powder-Coated / Untreated | Coating selected based on corrosion exposure and maintenance conditions |
| Accessories | Installation Clips & Edge Banding | Custom | Edge protection and clips recommended for high-traffic areas |
| Standards | Applicable Codes | ASTM A36 / A572 / ASTM A123 / EN 10025 / ISO 9001 / OSHA | Compliance ensures load capacity, corrosion protection, and structural safety |
Engineering Notes
- Designed for factory floors, loading docks, warehouse platforms, and vehicle lanes.
- Bearing bar and cross bar spacing are engineering references; fabrication follows project-approved drawings.
- Surface treatments are selected based on environmental exposure (outdoor, wet, or abrasive areas).
- Panels can be cut, notched, or banded for stair treads, maintenance trenches, or machinery access.
- Specifications can be adjusted according to vehicle or forklift load requirements.
3️⃣ Product Advantages
- Extreme Load Performance:High-strength carbon steel ensures panels withstand heavy forklifts, H-20/H-25 trucks, and aircraft loads.
- Fatigue Resistance: Deep-section bearing bars and full-penetration welding prevent deformation and joint failure under repeated dynamic loads.
- Slip-Resistant Options:Serrated bearing bars enhance safety in wet, oily, or icy industrial environments.
- Corrosion Protection & Longevity:Hot-dip galvanizing, powder coating, or paint ensures long-term performance in outdoor or chemical-exposed areas.
- Custom Engineering Flexibility:Panels can be cut, notched, or shaped for stair treads, trench covers, mezzanine floors, and specialized industrial layouts.
- Reduced Structural Weight: Using high-strength alloys reduces dead load on supporting structures while maintaining design load performance.
- Wide Industry Suitability:Logistics hubs, ports, airports, mining sites, bridges, and municipal infrastructure.
4️⃣ Applications & Engineering Scenarios
- Logistics & Ports:Loading docks, container yards, and reach-stacker platforms requiring high-load support and corrosion resistance.
- Aviation Infrastructure:Hangar drainage pits, tarmac maintenance areas, and service ramps for aircraft and equipment.
- Mining & Metallurgical Plants: Heavy equipment platforms, crusher walkways, and industrial pits exposed to debris and vibration.
- Municipal Works & Bridges: Trench covers, highway expansion joints, bridge decking, and pedestrian-industrial shared areas.
- Industrial Facilities:Factory floors, heavy machinery zones, and mezzanine flooring where load-bearing and safety are critical.
5️⃣ Quality Control & Performance
- Load Verification:Panels tested for deflection and load-bearing capacity per H-20/H-25 and project-specific criteria.
- Material Traceability:Full Material Test Reports (MTR) for steel chemistry and mechanical properties.
- Dimensional Accuracy:Compliance with ANSI/NAAMM MBG531/MBG532 ensures flatness, squareness, and proper installation fit.
- Weld Integrity: Visual and destructive testing ensures full fusion and penetration at every joint.
- Surface Protection Verification:Galvanizing thickness, paint adhesion, and powder coating quality checked per ASTM A123 / ISO 1461.
6️⃣ Factory Customization & Engineering Services
- Design Optimization: Expert consultation for bearing bar thickness, spacing, and cross bar configuration according to traffic type and load.
- Reinforced Edge Banding:Standard or heavy-duty channel steel banding for lateral rigidity.
- Custom Cutting & Notching:Panels tailored for stair treads, service trenches, pipes, and structural integration.
- CAD & 3D Shop Drawings: Detailed installation layouts for precise on-site fitment.
- Rapid Delivery & Pre-Fabrication:Panels numbered, cut, and ready for drop-in installation, reducing on-site labor.
7️⃣ Technical Notes
- Heavy-duty grating must accommodate concentrated and uniform loads from forklifts, trucks, and aircraft equipment.
- Bar depth, thickness, and spacing are designed according to span, load tables, and project requirements.
- Serrated surfaces recommended for high-slip-risk zones; open mesh optimized for drainage and debris clearance.
- Panels can include cut-outs, notches, or edge banding for piping, staircases, or heavy machinery access.
8️⃣ Frequently Asked Questions (FAQ)
Q: Can you provide load tables for H-25 trucks or forklifts?
A: Yes. Verified load charts are provided based on clear span and vehicle axle weight.
Q: Are pre-fabricated, numbered panels available?
A: Absolutely. All panels can be factory-cut, labeled, and delivered ready for immediate installation.
Q: What finish is recommended for high-traffic industrial areas?
A: Hot-dip galvanizing is standard; optional serrated surfaces improve traction. Powder coating or paint can be applied for additional corrosion protection.
Ready to Discuss Your Project?
Please feel free to contact us for custom quotes, technical support, load calculations, or any questions about our Heavy Duty Welded Steel Grating—we’re here to help bring your heavy-load solution to life.









