ASTM Standard A36 Hot Dip Galvanized Steel Grating Heavy Duty Industrial Platform Bar Grating
| Item | Specification |
| Product Name | ASTM A36 Galvanized Steel Grating |
| Material | ASTM A36 Carbon Structural Steel |
| Standard | ASTM A36 / American Standard |
| Dimensions | Standard Width: 600–1500 mmStandard Bar Thickness: 25–50 mmGrating Spacing: 30–100 mm |
| Customization | Custom Size, Shape & Spacing Available |
| Tolerance | Length: ±2 mmWidth: ±2 mmThickness: ±1 mm |
| Quality Inspection | Chemical composition test (Spectrometer)Mechanical property test (Tensile, Hardness)Flatness inspectionWeld strength testASTM A36 material certification |
| Surface Treatment | Hot-dip galvanization (HDG)Electro-galvanizationPowder coating / Spray paintingPlain black / Raw steel finish |
| Applications | Heavy-duty industrial walkways & platformsSteel stair treadsDrainage trench grating coversFactory & warehouse access platformsMarine ship decks & outdoor industrial 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 |
| Category | Key Parameters / Types | Common Specifications (mm) | Applications & Characteristics |
| Bearing Bar (Height × Thickness) | Standard Type | 25×3, 30×3, 32×5 | Industrial walkways, stair treads, maintenance platforms |
| Heavy-Duty Type | 40×5, 50×5, 60×10 | Parking lots, cargo terminals, large-span industrial areas | |
| Mesh Size (Pitch Bar × Cross Bar) | Series 1 (30mm pitch) | 30 × 50 / 100 | Most common; high strength, meets international industrial codes |
| Series 2 (40mm pitch) | 40 × 50 / 100 | Economical; ideal for light-load walkways or fencing | |
| Series 3 (60mm pitch) | 60 × 50 / 100 | Mining, large washing plants (prevents debris buildup) | |
| Material Grade (ASTM A36) | Standard Grade | No mandatory impact test required | General structural use; cost-effective, easy to weld & fabricate |
| Low-Temp Toughness Option | Impact test available on request | Major construction projects; enhanced toughness for cold or impact-prone environments | |
| Surface Treatment | Hot-Dip Galvanized (HDG) | Zinc coating ≥ 610g/m² | Superior corrosion resistance (20+ years); ideal for outdoor/marine use |
| Black / Painted | No zinc coating | Temporary projects, low-budget builds, or dry indoor environments | |
| Surface Profile | Plain / Serrated | Plain / Serrated (Anti-slip) | Serrated type provides excellent grip in oily or icy conditions |
| Category | Key Parameters | Description |
| 1. Dimensions | Span (L) × Width (W) | Critical: Always specify the direction of the bearing bars (Span). |
| 2. Structure | Bearing Bar Size | Height × Thickness (e.g., 32×5mm, 40×5mm). |
| Mesh Pitch | Center-to-center distance of Bearing Bars × Cross Bars. | |
| 3. Material | Steel Grade | A36, A572 |
| Surface Finish | Hot-Dip Galvanized (HDG), Painted, or Mill Finish. | |
| 4. Configuration | Surface Profile | Plain (Smooth) or Serrated (Anti-slip). |
| Special Cuts | Circular cuts, notches, or cut-outs for pipe penetrations. | |
| 5. Edging | Banding & Safety | End-banding, Toe Boards (Kick plates), or Nosing for stairs. |
| 6. Accessories | Fixing Clips | Saddle clips, G-clips, or Grating fasteners. |
1. Industrial Platform
Perfect for factory and warehouse platforms that bear forklift and heavy equipment loads. The open-grid design keeps the surface stable and anti-slip, letting debris and liquids fall through easily. This keeps work areas clean, safe, and low-maintenance for daily operations.
2. Municipal Engineering
Commonly used in urban drainage systems, road curbs, and public infrastructure projects. The heavy-duty structure supports regular foot and light vehicle traffic, while the open grid quickly clears rainwater and waste. It’s a durable, long-lasting choice for public works.
3. Port & Wharf
Built to withstand harsh marine conditions, heavy cargo handling, and frequent foot traffic at ports and docks. The hot-dip galvanized finish resists corrosion from saltwater, while the robust grating provides a stable walking surface even in wet, slippery environments.
4. Parking Lot
Ideal for parking area drainage grates and floor covers. The open grid efficiently drains rainwater and spills, preventing pooling and reducing slip risks for vehicles and pedestrians. Its strong structure easily supports vehicle weight and regular use.
5. Stair Treads
Designed for industrial and commercial stairways, these treads feature optional serrated or anti-slip surfaces for extra safety. The grating design reduces the risk of falls in wet or dusty conditions, making them a reliable choice for high-traffic staircases.
6. Grating Fence
Used as industrial safety fences, perimeter barriers, and security enclosures. The open-grid structure offers visibility and airflow while providing a strong, durable barrier. It’s a low-maintenance, corrosion-resistant option for factories, yards, and facilities.
1. Superior Corrosion Resistance
Our steel grating goes through hot-dip galvanizing treatment, forming a thick protective zinc layer that stands up to rain, humidity, and chemical splashes. This gives it long-lasting corrosion resistance even in outdoor, marine, or industrial environments, cutting down on rust-related maintenance.
2. High Load-Bearing Capacity
Made from heavy-duty ASTM A36 / A572 carbon steel, the grating is built with a strong welded structure to handle heavy static and dynamic loads. It easily supports vehicle traffic, heavy equipment, and high foot traffic without bending or deforming, making it reliable for industrial and commercial use.
3. Easy Installation & Low Maintenance
Thanks to its modular design, the grating can be directly spliced and installed on-site without welding. This saves you time and labor during construction. The open grid structure also lets dirt, liquids, and debris pass through, so cleaning and daily upkeep are simple and hassle-free.
4. Eco-Friendly & Fully Recyclable
The grating is made of 100% steel material, which is fully recyclable at the end of its service life. It produces minimal waste during production and use, fitting green building and sustainable project requirements.
Packaging
Stacked neatly and wrapped with plastic film to prevent scratches and moisture.
Secured to fumigated wooden pallets or steel pallets with steel straps and corner protectors for stability.
Designed for full container load (FCL) shipping to maximize space efficiency. Custom packaging available.
Delivery
15–30 days after receiving deposit, based on order quantity.
Primarily shipped by sea in 20GP / 40GP / 40HQ containers. LCL consolidation service available for small orders.
Stable cooperation with shipping companies such as MSK, MSC, COSCO efficiently logistics service chain, logistics service chain are we to your satisfaction.
We follow the standards of quality management system ISO9001 in all procedure, and have strict control from packaging material purchase to transport vehicle scheduling.
What are the main advantages?
It’s built for heavy loads, resists corrosion really well, and lasts for years. All at a price that works for most industrial budgets. That’s why it’s a go-to for all kinds of heavy-duty projects.
Does it meet US or international standards?
Yes. We manufacture to OSHA safety rules, ANSI/NAAMM specs, ASTM A36 for the base steel, and ASTM A123 for the galvanized finish. It checks all the boxes for North American projects.
What are the standard applications?
You’ll find it in industrial platforms, walkways, trench covers, oil and gas facilities, power plants, and factory floors. It’s built to handle tough daily use.
Can sizes and specifications be customized?
Absolutely. We tailor everything to your project: load bar size, spacing, panel dimensions, thickness, and even anti-slip serrated edges. Just share your requirements.
How long is the service life?
With proper hot-dip galvanizing, you can expect over 20 years of use in typical outdoor conditions. Actual lifespan will depend on climate and how exposed it is to the elements.
Contact Details
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
