Q235 Series Hot Dip Galvanized Steel Grating | Custom Steel Grating – Royal Steel Group
| Item | Specification |
| Product Name | Steel Grating |
| Material | Carbon structural steel (Q235 / Q235A / Q235B) |
| Standard | GB Standard |
| Dimensions | Standard width: 600–1500 mm |
| Standard bearing bar height/thickness: 25–50 mm | |
| Grating pitch: 30–100 mm | |
| Customization | Custom sizes and bar spacing can be produced on request |
| Tolerance | Length: ±2 mm |
| Width: ±2 mm | |
| Thickness: ±1 mm | |
| Quality Inspection | Chemical composition analysis (tested via spectrometer) |
| Mechanical property tests (tensile, hardness) | |
| Flatness check | |
| Weld strength testing | |
| Surface Treatment | Hot-dip galvanization (HDG) |
| Electro-galvanizing | |
| Powder coating / spray painting | |
| Plain black / raw steel finish | |
| Applications | Industrial walkways and working platforms |
| Steel stair treads | |
| Drainage grating covers | |
| Factory & warehouse access platforms | |
| Marine ship decks and outdoor installations |
| 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 and maintenance access platforms |
| Heavy-Duty Type | 40×5, 50×5, 60×10 | Parking lots, cargo terminals and long-span industrial facilities | |
| Mesh Size (Pitch Bar × Cross Bar) | Series 1 (30mm pitch) | 30 × 50 / 100 | Most widely used option. High strength, conforms to global industrial standards |
| Series 2 (40mm pitch) | 40 × 50 / 100 | Cost-effective grade, ideal for light-load walkways and fencing | |
| Series 3 (60mm pitch) | 60 × 50 / 100 | Suitable for mining sites and large washing plants; reduces debris buildup | |
| Material Grade (Q235) | Q235A | No impact test required | For indoor general structural parts, good value for money |
| Q235B | 20°C Impact Test | The standard pick for major projects, offering improved weldability and toughness | |
| Surface Treatment | Hot-Dip Galvanized (HDG) | Zinc coating ≥ 610g/m² | Outstanding corrosion resistance (service life over 20 years), perfect for outdoor and marine settings |
| Black / Painted | No zinc coating | Temporary projects, budget orders or dry indoor working environments | |
| Surface Profile | Plain / Serrated | Plain / Serrated (Anti-slip) | Serrated grating delivers reliable anti-slip performance under oily or icy conditions |
| Category | Key Parameters | Description |
| 1. Dimensions | Span (L) × Width (W) | Important: Always confirm the span direction, which runs along the bearing bars. |
| 2. Structure | Bearing Bar Size | Height × Thickness, for example 32×5mm or 40×5mm. |
| Mesh Pitch | Center-to-center spacing between bearing bars and cross bars. | |
| 3. Material | Steel Grade | Q235B as standard option; Q355B for higher strength; SS304 / SS316 stainless grades. |
| Surface Finish | Hot-dip galvanized (HDG), painted coating, or raw mill finish. | |
| 4. Configuration | Surface Profile | Plain smooth surface or serrated anti-slip surface. |
| Special Cuts | Circular cutouts, notches and openings reserved for pipe routing. | |
| 5. Edging | Banding & Safety Options | End banding, toe boards (kick plates), or stair nosing profiles. |
| 6. Accessories | Fixing Clips | Saddle clips, G-clips and other grating fasteners for installation. |
1. Walkways
Creates secure, steady walking paths for staff inside industrial facilities and warehouses.
Its open grid delivers good anti-slip performance, while letting liquids and debris fall through, maintaining a clean, safer walking area.
2. Steel Staircases
Perfect for industrial and commercial stair treads where long service life and slip resistance matter most.
We can fit serrated profiles or anti-slip inserts to boost onsite safety.
3. Work Platforms
Frequently deployed in workshops and maintenance zones to hold equipment and workers.
The open-grid layout improves air circulation and makes surface cleaning straightforward.
4. Drainage Areas
The perforated grid lets water, oil and other fluids drain away quickly.
It is commonly fitted on factory floors, outdoors and next to drainage channels for reliable fluid handling.
Royal Steel Group delivers premium steel grating solutions to clients globally, from industrial platforms in the Middle East to infrastructure projects throughout the Americas. We maintain local support teams in the US and Guatemala, ready to tackle complex structural specifications. Our steel gratings feature robust load capacity and dependable anti-slip protection. With 8 strategically positioned warehouses, we keep lead times tight and supply chains stable to support large energy and mining developments.
Packing
Standard Export Packing
Steel straps firmly bind grating panels, with extra reinforcement to prevent bending or damage while in transit.
Custom Labels & Project Marking
We can add tags on every bundle listing material grade, dimensions and project codes. This makes on-site sorting much easier for your team.
Extra Protective Options
Wooden pallets, protective wraps and upgraded packing are available for long-haul shipping or finishes that need careful handling.
Delivery
Lead Time
Normally 7–15 working days once the order is confirmed. The exact timeline depends on order volume and custom fabrication scope.
Flexible Shipping Solutions
We offer container loading, flatbed transport and local delivery arrangements to match your logistics plan.
Safe Handling & Transport
Our packaging is engineered for easy lifting and loading. Goods arrive ready for installation after unloading.
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.
Q1: What are the main advantages of your steel grating?
A: It features strong load capacity, good corrosion resistance and a long service life, all at a competitive price. This makes it ideal for general industrial and heavy-duty working conditions.
Q2: Can your steel grating comply with US and international standards?
A: Yes. We can produce to meet OSHA safety rules, ANSI/NAAMM specifications, ASTM A36 for base steel and ASTM A123 for hot-dip galvanizing.
Q3: What are its typical applications?
A: It is widely adopted for industrial platforms, walkways, trench covers, oil & gas facilities, power plants and factory workshops.
Q4: Can you customize sizes and specifications?
A: Absolutely. We tailor bearing bar dimensions, bar spacing, panel sizes, thickness and serrated anti-slip surfaces to match your project requirements.
Q5: What is the expected service life?
A: Properly galvanized grating can last more than 20 years in regular outdoor environments. Actual lifespan will vary depending on local climate and exposure conditions.
Contact Details
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
