Expanded Metal Grate | Heavy-Duty Flooring & Drainage Grating
ANPING METAL MESH – Professional Manufacturer of Expanded Metal Grate
As a professional China expanded metal mesh manufacturer with 19+ years of experience, we specialize in producing heavy-duty expanded metal grate for industrial flooring, drainage systems, walkways, platforms, and safety applications. Our raised and flattened expanded metal grating is made from galvanized steel, aluminum, and stainless steel, offering superior strength, slip resistance, and durability. We are also a trusted expanded metal mesh facade supplier for decorative architectural grates and exterior cladding systems.
What is Expanded Metal Grate?
Expanded metal grate is a heavy-duty, one-piece metal grating product made by expanding thick-gauge steel or metal sheets into a rigid diamond pattern. Unlike welded bar grating, expanded metal grates have no welds or weak points, making them extremely strong and long-lasting.
Expanded metal grates are widely used for drainage covers, industrial flooring, platform grating, stair treads, and safety barriers. The raised diamond surface provides natural slip resistance, while the open pattern allows water, debris, and air to pass through easily.
Our Anping expanded metal factory uses heavy-duty expanding machinery to produce thick, high-strength grates that meet ASTM and international load standards.
Standard Specifications for Expanded Metal Grate
| Type | Diamond Opening | Material Thickness |
|---|---|---|
| Heavy-Duty Grate | 1.5" × 3/8" – 2" × 1/2" | 9ga – 11ga (3.7mm – 4.8mm) |
| Medium-Duty Grate | 1" × 1/4" – 1.5" × 3/8" | 12ga – 14ga (2.0mm – 3.0mm) |
| Decorative Grate | 1/2" × 1/8" – 3/4" × 3/16" | 16ga – 18ga (1.2mm – 1.5mm) |
| Drainage Grate | 3/4" × 3/16" – 1" × 1/4" | 14ga – 16ga (1.5mm – 2.0mm) |
All our expanded metal grates are available in hot-dip galvanized steel for maximum corrosion resistance, ideal for outdoor drainage and industrial environments. We also produce stainless steel and aluminum grates for specialized applications.
Core Benefits of Expanded Metal Grate
Expanded metal grate outperforms traditional welded grating and plastic grates in every category:
Unmatched Structural Strength
One-piece construction with no welds or joints – will not break or separate under heavy loads.
Natural Slip Resistance
Raised diamond surface provides excellent traction, even when wet or oily.
Superior Drainage & Ventilation
Open diamond pattern allows maximum water, debris, and air flow.
Low Maintenance
No crevices for dirt buildup – easy to clean and long service life.
Cost-Effective
Lower cost than bar grating, with higher durability and less frequent replacement.
Top Applications for Expanded Metal Grate
Our expanded metal grate is used across industrial, commercial, and residential projects worldwide:
Drainage Systems: Trench drains, driveway grates, garage floor drains, and landscape drainage covers.
Industrial Flooring: Mezzanine floors, platform grating, walkways, and machinery platforms.
Stair Treads: Anti-slip stair treads for industrial, commercial, and outdoor stairs.
Machine Guards: Heavy-duty safety grates for equipment and production lines.
Architectural Grilles: Vent grilles, wall cladding, sunscreens, and decorative facade elements.
Security & Fencing: Enclosure grates, window guards, and high-security barriers.
Materials for Expanded Metal Grate
We produce grates in high-performance materials for every environment:
Hot-Dip Galvanized Steel (Most Popular)
Excellent rust resistance, high strength, and affordable – ideal for outdoor drainage and industrial use.
304/316 Stainless Steel
Corrosion-proof, hygienic, and weatherproof – perfect for food processing, marine, and coastal applications.
Aluminum Alloy
Lightweight, rust-proof, and aesthetically pleasing – used for architectural and decorative grates.
Carbon Steel
Ultra-high strength for heavy industrial flooring and load-bearing platforms.
Our powder-coated expanded metal grates provide custom-colored finishes for architectural and decorative projects.
Types of Expanded Metal Grate We Supply
We offer a full range of expanded metal grates to meet all project requirements:
• Raised Expanded Metal Grate – Standard slip-resistant surface for industrial flooring
• Flattened Expanded Metal Grate – Smooth surface for architectural and interior use
• Heavy-Duty Load-Bearing Grate – For vehicle driveways and industrial platforms
• Micro-Mesh Grate – Small hole expanded metal grate for fine filtration and debris control
• Custom-Framed Grate – Pre-framed for easy installation in drainage trenches
Custom Expanded Metal Grate Services
We provide full customization to meet your exact project needs:
Custom Sizes: Cut to any length and width for trenches and openings
Frame Fabrication: Welded steel or aluminum frames for perfect fit
Bending & Forming: Curved or angled grates for unique designs
Surface Treatments: Galvanizing, powder coating, and polishing
Load Testing: Certified load ratings for industrial and commercial use
Our custom expanded metal service ensures your grate fits perfectly and performs reliably.
Frequently Asked Questions: Expanded Metal Grate
What is the difference between expanded metal grate and bar grating?
Can expanded metal grate support vehicle traffic?
Is expanded metal grate rust-resistant?
Do you offer custom-sized drainage grates?
What finish is best for outdoor expanded metal grate?
Order Expanded Metal Grate Today
Heavy-duty | Slip-resistant | Galvanized/stainless/aluminum | Custom sizes | Factory-direct pricing
Request a Grate Quote