ASTM A36 Hot Dipped Galvanized Steel Grating/Heavy Duty Metal Grid/Various Specification Grating Welded Panels
| Category | Details |
| Product Name | Expanded Metal Grating |
| Material Standard | ASTM A36 |
| Standard Dimensions | Standard Width: 600–1500 mm |
| Standard Height & Thickness: 25–50 mm | |
| Grating Spacing: 30–100 mm, custom sizes acceptable | |
| Dimensional Tolerance | Length: ±2 mm |
| Width: ±2 mm | |
| Thickness: ±1 mm | |
| Quality Inspection Items | 1. Chemical composition test via spectrometer |
| 2. Mechanical performance tests (tensile & hardness) | |
| 3. Surface flatness inspection | |
| 4. Weld strength test | |
| Available Surface Treatments | Hot-dip galvanization (HDG) |
| Electro-galvanization | |
| Powder coating / Spray painting | |
| Plain raw black steel finish | |
| Typical Applications | Industrial walkways & working platforms |
| Steel stair treads | |
| Drainage trench covers | |
| Warehouse & factory access platforms | |
| Ship decks and outdoor construction facilities |
| Grating Type | Bearing Bar Pitch / Spacing | Bar Width | Bar Thickness | Cross Bar Pitch | Mesh / Opening Size | Load Capacity |
| Light Duty | 19 mm – 25 mm (3/4"–1") | 19 mm | 3–6 mm | 38–100 mm | 30 × 30 mm | Up to 250 kg/m² |
| Medium Duty | 25 mm – 38 mm (1"–1 1/2") | 19 mm | 3–6 mm | 38–100 mm | 40 × 40 mm | Up to 500 kg/m² |
| Heavy Duty | 38 mm – 50 mm (1 1/2"–2") | 19 mm | 3–6 mm | 38–100 mm | 60 × 60 mm | Up to 1000 kg/m² |
| Extra Heavy Duty | 50 mm – 76 mm (2"–3") | 19 mm | 3–6 mm | 38–100 mm | 76 × 76 mm | >1000 kg/m² |
| Model | Load-bearing Flat Steel Specifications (mm) | Flat Steel Spacing (mm) | Crossbar Spacing (mm) | Applicable Scenarios |
| G253/30/100 | 25×3 | 30 | 100 | Light-duty platforms, steps |
| G303/30/100 | 30×3 | 30 | 100 | General industrial platforms |
| G305/30/100 | 30×5 | 30 | 100 | Medium-load platforms |
| G323/30/100 | 32×3 | 30 | 100 | General industrial platforms |
| G325/30/100 | 32×5 | 30 | 100 | Heavy-duty platforms, workshops |
| G403/30/100 | 40×3 | 30 | 100 | Heavy equipment supports |
| G404/30/100 | 40×4 | 30 | 100 | Heavy equipment supports |
| G405/30/100 | 40×5 | 30 | 100 | Heavy-duty industrial platforms |
| G503/30/100 | 50×3 | 30 | 100 | Extra-heavy-duty platforms |
| G504/30/100 | 50×4 | 30 | 100 | Extra-heavy-duty platforms |
| G505/30/100 | 50×5 | 30 | 100 | Industrial plant operating platforms |
| G254/30/100 | 25×4 | 30 | 100 | Light-duty heavy-duty platforms |
| G255/30/100 | 25×5 | 30 | 100 | Light-duty heavy-duty platforms |
| G304/30/100 | 30×4 | 30 | 100 | Medium-heavy-duty platforms |
| Customization Category | Available Options | Description / Details |
| Dimensions | Length, Width, Bearing Bar Spacing | Fully adjustable to your project specs: Length 1–6 m; Width 500–1500 mm; Bearing bar spacing 25–100 mm, engineered to match your specific load demands. |
| Load & Bearing Capacity | Light, Medium, Heavy, Extra-Heavy Duty | Fully tailored load capacity to fit your project’s structural requirements; bearing bars and mesh openings are precision-engineered to comply with all relevant structural standards. |
| Processing | Cutting, Drilling, Welding, Edge Finishing | Panels can be precision-cut or drilled to your exact dimensions; edges can be trimmed or reinforced for added durability; prefabricated welding is available to simplify on-site installation. |
| Surface Treatment | Hot-Dip Galvanizing, Powder Coating, Industrial Grade Painting, Anti-Slip Coating | Chosen to match your application environment – indoor, outdoor, or coastal – delivering long-lasting corrosion resistance and reliable anti-slip safety performance. |
| Marking & Packaging | Custom Labelling, Project-Specific Coding, Export-Ready Packaging | Custom labels display material grade, dimensions, and project-specific details; packaging is tailored for container shipping, flatbed transport, or local last-mile delivery. |
| Special Features | Anti-Slip Serrated Edges, Custom Mesh Configurations | Optional serrated or perforated surfaces for improved slip resistance and on-site safety; mesh size and pattern can be fully customized to meet your project’s functional and aesthetic needs. |
Advantages of Steel Metal Grating Panels:
Economical, using less steel.
Rust-resistant surface treatment for durability.
Simple appearance, creating an industrial aesthetic.
Rapid drainage, preventing water accumulation.
Optional serrated anti-slip surface for safety.
Main Applications:
Industrial walkways, stair treads, maintenance platforms, municipal drainage covers, ship decks, and outdoor public building projects. All sizes and load-bearing standards can be customized to your project requirements.
High Strength and Reliable Load-Bearing Capacity
Royal Steel Group's galvanized steel gratings are manufactured from high-quality carbon steel, providing superior structural strength and load-bearing performance for industrial and heavy-duty applications.
Excellent Corrosion Resistance
Hot-dip galvanizing creates a protective zinc coating, enhancing its resistance to rust, moisture, and harsh environments, ensuring a long service life.
Customized Solutions Available
We offer a variety of load-bearing bar sizes, mesh apertures, panel sizes, and surface finishes to meet diverse project needs.
Safe and Practical Design
The open mesh structure provides anti-slip properties, efficient drainage, and good ventilation, making it ideal for walkways, platforms, and stair systems.
Wide Range of Applications
Suitable for industrial plants, warehouses, power plants, petrochemical facilities, mining projects, drainage systems, and infrastructure construction.
Strict Quality Control
Royal Steel Group adheres to international quality standards to ensure stable and reliable product performance and excellent welded grating panel quality.
Efficient Export Services
Professional packaging, flexible logistics solutions, and complete export documentation ensure fast and secure global delivery.
Packing Solutions
Standard Export Packing
All steel grating sheets are tightly bound with steel strapping to prevent bending and scratches during long-distance transport.
Custom Marking for Project Tracking
We attach custom tags on every bundle, clearly marking steel grade, exact dimensions and exclusive project codes, making on-site sorting and installation much easier.
Extra Protective Packaging Options
Wooden pallets, shielding films and heavy-duty packing are available upon request, ideal for orders with high surface finish standards or cross-ocean shipments.
Delivery Arrangements
Production Lead Time
Our general production cycle ranges from 7 to 15 working days after deposit confirmation, adjusted based on order volume and custom processing demands.
Multiple Shipment Choices
We offer full container loading, flat truck haulage and local door-to-door delivery to match your transport demands.
Transport-Friendly Packaging Design
Our packing design takes lifting and loading work into full consideration, so goods stay intact and ready for quick installation once they reach your site.
Logistics & Quality Control
We maintain long-term cooperative partnerships with major carriers including MSK, MSC and COSCO, delivering reliable, smooth logistics services for all overseas orders.
Every production and delivery link complies with ISO9001 quality management standards. We carry out rigorous inspections throughout the whole process, from sourcing packing materials to arranging delivery vehicles.
1. What are the advantages of hot-dip galvanized steel grating?
Hot-dip galvanized steel grating offers excellent rust resistance, weather resistance, low maintenance costs, and reliable performance in outdoor, industrial, and marine environments.
2. In which fields is ASTM A36 steel grating typically used?
It is widely used in industrial walkways, platforms, stair treads, drainage covers, factory floors, equipment platforms, bridges, and infrastructure projects.
3. What are the surface treatment options for steel grating?
The most common surface treatment is hot-dip galvanizing. Depending on the application requirements, we can also provide other options such as painting and powder coating.
4. Is hot-dip galvanized steel grating suitable for heavy-duty applications?
Yes. ASTM A36 steel has good strength and stability, making it suitable for heavy-duty platforms, industrial walkways, and high-load environments.
5. What kind of packaging is used for export?
The steel grating panels are bundled with steel straps and protected with waterproof packaging film, and labeled with specifications. Customized export packaging is available upon request.
6. What is the delivery time for galvanized steel grating?
Standard production and delivery time is typically 7-15 days after order confirmation, depending on quantity, specifications, and customization requirements.
7. What documents can you provide?
We provide complete export documentation, including Material Testing Certificate (MTC), inspection report, packing list, commercial invoice, and certificate of origin (if required).
8. Why choose Royal Steel Group's ASTM A36 galvanized steel grating?
Royal Steel Group offers high-quality galvanized steel grating with rigorous quality control, flexible customization services, highly competitive prices, and professional international shipping services.
