Metal Perforated Noise Barrier

Product Introduction

Microporous metal Noise Barrier uses a perforated resonance sound-absorbing structure, with micro-holes in thin metal panels and a cavity between the panel and rigid back wall. Optional sound-absorbing materials can be added to broaden the absorption frequency range and enhance acoustic performance.
It can also be configured as a composite noise barrier, combining metal perforated panels with transparent laminated acrylic windows for sound absorption, natural lighting, visibility, and aesthetic integration.
Ideal for high-speed railways, subways, highways, and airport perimeters, it provides effective high-frequency noise reduction, durability, and long-term structural performance.Our Perforated Metal Noise Barrier portfolio features the Highway Microporous Noise Barrier built for demanding traffic noise control assignments.

Besides our Metal Perforated Noise Barrier, we offer a complete range of acoustic barrier solutions, including Metal Louver Noise Barrier, PMMA Acrylic Noise Barrier, Photovoltaic Noise Barrier, and other specialized systems. We also provide Acoustic Core Systems and related accessories to meet diverse project requirements.

For complete highway infrastructure projects, our noise barrier systems can also be integrated with Highway Guardrail Systems and other Traffic Safety and Road Management Products, providing a coordinated solution for noise reduction, road safety, and overall traffic management.

Material & Structural Behaviour

Perforated metal noise barrier with micro-aperture panels, offering excellent sound absorption, durability and wind resistance.

Precision Micro-Aperture Engineering

The front panel features precision micro-holes (0.8–2.0 mm) with a 20–30% perforation rate for efficient sound absorption and dissipation.

Lightweight Structural Integrity

Surface density: 28.0–45.0 kg/m²; wind resistance: 37.0–41.4 m/s (Class 11–13 typhoons), reducing dead load on bridges and elevated structures.

Aerodynamic Performance

The smooth, micro-perforated surface features a low drag coefficient of 0.40–0.65, reducing wind load on support pillars compared with solid barrier walls.

Performance Specifications

Micro-perforation Resonance Design

The micro-pinhead structure is optimized for high-frequency noise, with specialized subway models using 1.0 mm apertures and a 28% perforation rate for underground transit acoustics.

High-Efficiency Acoustic Core

Features a 20–30 mm open-cell Foam Aluminum core with Class A1 non-combustibility, stable acoustic performance from -40°C to +150°C, and a service life exceeding 25 years.

Extreme Environment Durability

Structural life >65 years, with 100 µm hot‑dip galvanizing and 40 µm fluorocarbon coating. It passes a 1200h salt spray test with zero corrosion for reliable performance in humid, coastal, and high‑salinity environments.

Dimensions & Customization

Thickness: 80–150 mm (Standard: 120 mm)
Width: 400–600 mm (Standard: 500 mm)
Standard Sizes: Subway: 2000/2500 × 500 × 120 mm; Municipal: 1500 × 500 × 100 mm
Installation: Modular, rapid assembly, compatible with standard systems

BENEFITS OF LUOFU HIGHWAY METAL NOISE BARRIER

1. Robust structural design ensures long-term structural safety
2. Excellent noise reduction performance with a wide coverage range
3. Deep expertise in acoustic R&D, backed by an independent R&D system
4. Full-chain independent production with a comprehensive product lineup
5. Supported by automated production lines, ensuring consistent precision in finished products
6. Sophisticated anti-corrosion processes, ensuring a long service life in outdoor environments
7. Rapid response throughout the entire pre-sales process, providing one-stop technical support
8. Extensive experience in engineering projects, with a wealth of case studies both domestically and internationally
9. Comprehensive after-sales service and flexible supply solutions, capable of handling both large and small orders

Production Process

Stage 1: Precision Fabricating

Advanced shearing and CNC bending for non-standard panel blanks and auxiliary hardware.

Stage 2: Acoustic Perforation

High-speed CNC punching for optimal sound absorption performance.

Stage 3: Panel Structure Forming

Heavy-duty roll forming for precise geometry and structural integrity.

Stage 4: Reinforced Welding

Structural welding reinforces the internal skeleton and keel for maximum stability.

Stage 5: Final Assembly

Multi-layer integration combines acoustic core materials, facing panels, and backplates.

Stage 6: Protective Finishing

Electrostatic powder coating for superior weather resistance and a professional finish.

Stage 7: Structural Anchoring

Heavy-duty welding for secure base plates, hanging brackets, and reinforcement ribs.

Related Noise Barrier Products

Metal Louver Noise Barrier

Fully Enclosed Noise Barrier

white ribbed reinforced acrylic noise barrier along urban elevated expressway, reinforced rib structure boosts panel firmness and anti-break performance, rigid transparent sound barrier for busy urban traffic noise control

PMMA Acrylic Noise Barriers

urban viaduct photovoltaic noise barrier with transparent acrylic window and perforated metal panel front shot, solar power sound barrier for city overpass highway

Photovoltaic Noise Barriers

Aluminum Foam Noise Barrier

Fiberglass Reinforced Plastic (FRP) Noise Barrier along railway line, perforated FRP noise barrier for rail transit noise reduction

FRP Reinforced Plastic Noise Barrier

Lightweight Cellular Concrete Noise Barrier (ECP Panel) beside industrial buildings, decorative cement noise barrier for urban environments

Lightweight ECP Concrete Noise Barrier

Open cell foam aluminum panel, new lightweight sound absorbing material for highway noise barrier, A1 fireproof non-fibrous acoustic sheet

Acoustic Core Systems

Related Projects

Explore real-world case studies showcasing how our full-range services and customized solutions achieve outstanding performance in sound insulation and acoustic engineering projects.