Q235 A36 Galvanized Steel Grating Manufacturer and Supplier

ASTM A36 Grating or 235JR Hot dip galvanized metal floor gratings are typically made from high – quality carbon steel or stainless steel.

Carbon steel offers good strength and toughness at a relatively low cost, while stainless steel provides enhanced corrosion resistance and oxidation resistance, making it suitable for environments with high corrosion requirements.

 Steel Grating Manufacturing Process

• Fabrication Methods:

  • Welded Grating: Steel bars (bearing and cross bars) are welded at intersections.

  • Pressure-Locked Grating: Bars are interlocked under high pressure without welding.

  • Expanded Metal Grating: Created by cutting and stretching steel sheets into a mesh pattern.

• Galvanization: Primarily hot-dip galvanizing for a thick, long-lasting zinc coat, suitable for harsh environments.

Steel Grating Types

• Bar Grating: Common in industrial settings, with variations in bar spacing (e.g., 30x3mm, 40x4mm) for different load capacities.

• Serrated Grating: Features textured surfaces for enhanced slip resistance.

• Expanded Metal Grating: Lightweight, used for walkways and fencing.

 Steel Grating Applications

• Industrial platforms, walkways, and stair treads.

• Drainage grates, bridge flooring, and trench covers.

• Outdoor structures like parking garages and stadiums.

• Security fencing and machinery guards.

Grating Advantages

• Durability: Resists corrosion, weathering, and heavy loads.

• Low Maintenance: Zinc coating minimizes rust; easy to clean with water.

• Safety: Open grid allows drainage; serrated options reduce slipping.

• Longevity: Outlasts non-galvanized steel, reducing replacement costs.

• Recyclability: Steel is fully recyclable, supporting sustainability.

Standards and Compliance

• Adheres to ASTM A123/A123M (galvanization) and ANSI/NAAMM MBG 531 (load capacity).

• Certifications ensure safety and performance in specific environments (e.g., OSHA for workplaces).

Galvanized Steel Grating vs. Aluminum Grating: Which is Right for Your Project?

1. Material Properties

• Galvanized Steel Grating:

  • Made from carbon steel coated with zinc (hot-dip galvanized) for corrosion resistance.

  • Extremely strong, ideal for heavy loads and high-traffic areas.

  • Prone to rust if the zinc coating is damaged.

• Aluminum Grating:

  • Lightweight, naturally corrosion-resistant (no coating needed).

  • Non-sparking and non-magnetic, perfect for hazardous environments.

  • Lower strength compared to steel, but excellent for moderate loads.

---

2. Strength & Durability 💪

• Steel Grating:

  • Higher load capacity: Handles heavy machinery, vehicles, and industrial use.

  • Longevity: Lasts decades with proper maintenance, even in harsh conditions.

• Aluminum Grating:

  • Moderate strength: Suitable for pedestrian walkways, platforms, and light-duty applications.

  • No rust: Performs well in marine, coastal, or chemical environments.

---

3. Weight & Installation

• Steel Grating:

  • Heavier, requiring stronger structural support.

  • More labor-intensive to install.

• Aluminum Grating:

  • Up to 1/3 the weight of steel, reducing transport and installation costs.

  • Easier to cut and handle on-site.

---

4. Corrosion Resistance

• Steel Grating:

  • Zinc coating protects against rust, but scratches or wear can expose steel to corrosion.

  • Best for dry or mildly corrosive environments.

• Aluminum Grating:

  • Naturally forms an oxide layer, resisting saltwater, chemicals, and humidity.

  • Ideal for coastal areas, wastewater plants, and food processing facilities.

---

5. Cost Comparison

• Steel Grating:

  • Lower upfront cost but may require maintenance (repainting/recoating).

• Aluminum Grating:

  • Higher initial price, but minimal lifetime maintenance costs.

---

6. Best Applications

• Choose Galvanized Steel Grating For:

  • Industrial floors, bridge decking, trench covers, and heavy machinery platforms.

  • High-heat environments (aluminum weakens at elevated temperatures).

• Choose Aluminum Grating For:

  • Marine docks, offshore platforms, walkways in chemical plants, and architectural designs.

  • Lightweight structures where corrosion resistance is critical.

---

Quick Decision Guide ✅