Jun . 23, 2026 17:00 Back to list

Galvanized Perforated Sound Absorbing Noise Barrier for Highway & Railway Noise Reduction

Product Classification & Manufacturing Craft

1. Perforated Metal Sound Absorbing Barrier (Main Road Type)

Outer perforated galvanized steel panel + high-density sound-absorbing glass wool inner core + back sealing plate, layered composite structure. Sound waves penetrate perforations and are fully consumed inside the wool layer, low sound reflection, excellent noise absorption effect. Welded into standard modular panels, matched galvanized H-beam posts, rubber shock-absorbing gaskets eliminate vibration noise under vehicle impact.

2. Transparent Polycarbonate / Acoustic PMMA Barrier

Solid transparent impact-resistant sheet, high light transmittance, avoids visual blockage along urban viaducts and scenic roads. Great landscape coordination while maintaining strong sound insulation performance. Anti-UV, anti-scratch and self-clean coating optional.

3. Industrial Equipment Noise Enclosure

Integrated sound insulation box for air compressors, generators, cooling towers, pump units and production lines, fully enclosed design for maximum noise reduction. Equipped with sound-absorbing louvers for ventilation without noise leakage.

4. Fully Enclosed Railway Acoustic Tunnel

Combination of metal absorption panels + transparent top panels, complete closed structure for high-speed rail and elevated lines near dense residential zones. Anti-wind, anti-vibration overall steel frame system.

Raw Materials & Core Technical Parameters

Main Material Matching

Outer Panel: Q235 galvanized perforated steel, aluminum alloy plate, transparent PC/PMMA sheet
Sound Absorbing Core: Hydrophobic glass wool, flame-retardant polyester sound cotton
Support Frame: Hot-dip galvanized H-beam, square steel post
Sealing Parts: EPDM aging-resistant shock absorption rubber strip

Key Performance Indicators

Noise Insertion Loss: 15–35 dB(A)
Sound Absorption Coefficient (NRC): 0.7–0.95
Sound Insulation Index: ≥30dB
Wind Resistance Grade: Resist 10–12 level strong wind
Service Life: Metal type 15–20 years; transparent PC type 20–30 years
Standard Panel Size: 500×2000mm, 1000×2000mm customizable
Surface Treatment: Hot-dip galvanizing + outdoor electrostatic powder coating; RAL green, gray, blue, white optional

Core Competitive Advantages

✅ Dual Sound Absorption & Insulation Effect

Layered perforated absorption + dense back plate isolation triple structure, convert sound energy into heat to avoid noise rebound, stable noise reduction for low & high frequency noise.

✅ All-Weather Anti-Corrosion & UV Resistance

Dual galvanized & coated steel frame resists rain, snow, salt fog and exhaust corrosion; transparent panels add anti-UV coating without yellowing or cracking.

✅ Modular Fast Construction

Standard prefabricated panels with matching installation accessories, bolt assembly without on-site welding, greatly shorten road & factory project construction cycle.

✅ Low Wind Load & Stable Anti-Vibration

Perforated ventilation surface reduces lateral wind pressure; rubber shock strips eliminate vibration resonance caused by vehicle or equipment operation.

✅ Landscape & Function Integrated

Optional transparent sections and color-matched panels fit urban landscapes, no rigid closed wall feeling, widely recognized for municipal scenic road projects.

✅ Flame Retardant & Safe

Inner sound cotton reaches Class A/B1 flame retardant standard, no secondary fire risk for tunnels, industrial plants and busy traffic roads.

✅ Low Long-Term Maintenance Cost

Smooth anti-fouling coating, easy water washing; anti-rust frame no regular repainting required.

Wide Application Scenarios

Traffic Infrastructure: Highway median & roadside barriers, urban viaducts, overpasses, high-speed rail, subway elevated sections
Residential Noise Control: Community boundary sound wall, school and hospital peripheral noise isolation
Industrial Noise Treatment: Cooling tower, generator, air compressor, workshop production line acoustic enclosure
Municipal Landscape: Park roads, scenic tourist routes transparent noise barrier
Airport & Logistics: Airport peripheral access roads, port equipment noise reduction walls
Fully Enclosed Projects: High-speed rail full acoustic tunnel, underground exit noise closed barrier

Customization & Global Export Service

Custom panel height, noise reduction grade, color, transparent section layout and full site structural drawing design according to road wind pressure, noise decibel and landscape requirements. Free acoustic test reports, installation node drawings and sample panels provided. Strict inspection of perforation uniformity, coating adhesion and sound cotton filling density before shipment, waterproof film wrapped panels + export wooden pallet packaging. Mixed container loading with anti-glare mesh, wind dust suppression net and metal wire mesh to save ocean freight.

Our noise barriers are exported to Southeast Asia, Middle East, Europe, Australia and Africa. We maintain long-term stable cooperation with municipal transportation engineering companies, environmental protection contractors, railway construction groups and industrial factory owners worldwide.

Company Profile

We are an integrated metal mesh and environmental facility manufacturer integrating R&D, production and export, covering noise barrier, wind dust suppression wall, highway anti-glare mesh, security fence, expanded metal, perforated plate and full series industrial filter elements. Equipped with automatic punching, composite pressing and coating production lines, we provide one-stop traffic noise & industrial environmental protection metal solutions for global purchasers.

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