Galvanized Welded Steel Grating Supplier in China | Custom Sizes for Industrial Applications
| Parameter | Specification |
| Product Name | Steel Grating |
| Material | Carbon Structural Steel |
| Standard | GB Standard, ASTM Standard, EN Standard |
| Dimensions | Standard Width: 600–1500 mm |
| Standard Height/Thickness: 25–50 mm | |
| Grating Spacing: 30–100 mm | |
| Customization | Custom Size & Spacing Available |
| Tolerance | Length: ±2 mm |
| Width: ±2 mm | |
| Thickness: ±1 mm | |
| Quality Inspection | Chemical composition test (Spectrometer) |
| Mechanical property test (Tensile, Hardness) | |
| Flatness inspection | |
| Weld strength test | |
| Surface Treatment | Hot-dip galvanization (HDG) |
| Electro-galvanization | |
| Powder coating / Spray painting | |
| Plain black / Raw steel finish | |
| Applications | Industrial walkways & platforms |
| Steel stair treads | |
| Drainage grating covers | |
| Warehouse and factory access platforms | |
| Ship decks & outdoor 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 | General Dimensions (mm) | Applications & Features |
| Bearing Bar (Height × Thickness) | Standard Type | 25×3, 30×3, 32×5 | Industrial goods walkways, stairs treads, maintenance platforms. |
| Heavy-Duty Type | 40×5, 50×5, 60×10 | Car parks, freight terminals, industrial halls with large spans. | |
| Mesh Size (Pitch Bar × Cross Bar) | Series 1 (30mm pitch) | 30 × 50 / 100 | Strongest; Most common, Complies with International Industrial Codes. |
| Series 2 (40mm pitch) | 40 × 50 / 100 | Cost effective; for light duty walk ways or fencing. | |
| Series 3 (60mm pitch) | 60 × 50 / 100 | Mining, large washing plants (discourages accumulation of debris). | |
| Material Grade (Q235) | Q235A | No need for an impact test | Indoor use, general structural components – inexpensive. |
| Q235B | 20°C Impact Test | Routine Pick: Good weldability and toughness for large projects. | |
| Surface Treatment | Hot-Dip Galvanized (HDG) | Zn coating ≥ 610g/m² | Long-lasting corrosion resistance (20+ years), and for the best outdoor/marine environment. |
| Black / Painted | No zinc coating | Venture projects, tight budget or dry indoor surroundings. | |
| Surface Profile | Plain / Serrated | Plain / Serrated (Antiskid) | Serrated: This type has also good anti-slip value on oil and ice. |
| Category | Key Parameters | Description |
| 1. Dimensions | Span (L) × Width (W) | Critical: The direction of bar must always be given (Span). |
| 2. Structure | Bearing Bar Size | Height × Thickness (e.g. 32×5mm 40×5mm). |
| Mesh Pitch | Bearing Bars Center to Center × Cross Bars Center to Center. | |
| 3. Material | Steel Grade | Q235B(Standard),Q355B(High Strength),SS304/316. |
| Surface Finish | Pre-Galvanized, which is galvanized (or zinc coating) before fabrication, or Post-Galvanized. | |
| 4. Configuration | Surface Profile | Plain (Plain) or Serrated (Anti-slip). |
| Special Cuts | Circular cuts, notches, or reliefs 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. Walkways
Metal Grating is widely used for industrial walkways in factories, warehouses, processing plants, and logistics facilities. Its open structure helps prevent water, dust, and debris accumulation, providing a secure walking surface while reducing maintenance requirements.
2. Steel Stair Treads
Steel grating stair treads offer excellent strength and long-term durability for industrial and commercial buildings. Serrated surfaces or anti-slip treatments can be supplied to improve traction and enhance worker safety in wet or high-traffic environments.
3. Working Platforms
Commonly installed on equipment platforms, maintenance decks, and production areas, steel grating provides reliable load-bearing performance while allowing light, air, and water to pass through. The open-grid design also makes inspection and cleaning more convenient.
4. Drainage and Trench Covers
Heavy Duty Steel Grating is an effective solution for drainage channels, trench covers, and wastewater systems. Its open mesh design allows rainwater, oils, and other liquids to flow freely, helping maintain efficient drainage and reducing the risk of standing water in industrial and outdoor areas.
Royal Steel Group supplies Hot Dip Galvanized Steel Grating products for industrial, energy, mining, and infrastructure projects across global markets. From industrial facilities in the Middle East to construction projects throughout North and South America, our grating solutions are trusted for their strength, durability, and dependable anti-slip performance.
To better serve international customers, we maintain local support teams in the United States and Guatemala, providing responsive communication and project coordination. Supported by eight strategically located warehouses and a stable supply network, we help customers reduce delivery times and ensure reliable material availability for both standard and large-scale projects.
Packing
Export Packaging
Steel Bar Grating panels are securely bundled with steel straps to maintain stability during transportation and minimize the risk of damage or distortion.
Identification & Marking
The bundles can be labeled with the products specifications, size, grade of the material and project reference; this stream line the site installation and warehouse management.
Optional Packing Solutions
Extra packing solutions, wooden pallets, waterproof packing and surface protection material can be provided for export shipment or special project handling.
Delivery
Production Time
Normal production of Size specification capacity is 7 to 15 days upon order confirmation depending on order quantity, specs and so on.
Shipping Methods
There are a variety of means of transportation, including container shipping, bulk cargo, road transport, as well as project logistics solutions.
Safety in Transportation
All of our products are packaged in a manner that allows for safe loading/unloading and handling, which means you can rest assured knowing that your material will arrive on site in the best possible condition and will be ready to be installed.
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.
1. What are the main advantages?
It boasts high load-bearing capacity, excellent corrosion resistance, long service life, and a reasonable price, making it the best choice for industrial and heavy-duty applications.
2. Does it meet US or international standards?
Yes. It can be manufactured according to OSHA safety regulations, ANSI/NAAMM specifications, ASTM A36 (steel) standards, and ASTM A123 (galvanized) standards.
3. What are the standard applications?
Widely used in industrial platforms, walkways and trench covers, oil and gas plants, power plants, and shops.
4. Can sizes and specifications be customized?
Yes. We can customize load-bearing bar sizes, spacing, panel sizes, thicknesses, and serrated (anti-slip) surface options according to specific project requirements.
5. How long is the service life?
With proper galvanizing, the service life can exceed 20 years under normal outdoor conditions, but its service life is greatly affected by climate and exposure conditions.
Contact Details
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
-
Hot Dipped Q195 Galvanized wire 24/10 Gauge wit...
-
High Quality Good Price DX54D Sheet Galvanized ...
-
JIS G3302/G3303 Galvanized Steel Roofing Sheet ...
-
Factory Best Quality Hot Sale Hot-dipped Galvan...
-
Factory 3.5mm Hot Dipped 40g 60g SAE 1008 Galva...
-
Hot Selling 10# Galvanized U Beam Steel C Chann...
