A metal microporous noise barrier is a composite sound absorption and insulation system designed for high-performance noise control. It features a precision-engineered structure consisting of:
A front perforated metal panel (typically aluminum or galvanized steel) with micro-holes ranging from 1.0 mm to 2.5 mm in diameter
An internal layer of high-performance sound-absorbing materials (such as glass wool or rock wool)
A sealed metal back panel
This forms an advanced acoustic system:
Perforated Panel – Absorptive Core – Air Cavity – Back Panel
How It Works
This structure provides both sound absorption and sound insulation:
Sound waves pass through the micro-perforations and enter the الداخلية absorptive layer, where friction and viscous losses within the fiber structure convert sound energy into heat, achieving efficient noise reduction.
The sealed back panel and overall structure effectively block sound transmission, ensuring a significant noise difference between both sides of the barrier.
Compared to traditional noise barriers that rely solely on material density, metal microporous barriers offer superior performance in acoustic efficiency, durability, and aesthetic design.
Key Advantages
1. Excellent Acoustic Performance
Noise Reduction Coefficient (NRC): ≥ 0.80
Sound Transmission Class (STC): ≥ 20 dB
The composite structure is highly effective for mid-to-high frequency traffic noise and broadband industrial noise.
Additionally, by adjusting:
Perforation diameter
Open area ratio
…the barrier can be optimized for specific frequency ranges, delivering precise and efficient noise control.
2. Strong Structure & Weather Resistance
The all-metal design ensures long-term durability:
Impact Resistance: Withstands debris, stone impact, and external forces
Corrosion Resistance: Made from galvanized steel, aluminum, or stainless steel with PVDF or powder coating to resist acid rain, salt spray, and UV exposure
Fire Safety: Uses Class A non-combustible materials (rock wool/glass wool), compliant with GB 8624 standards
Ideal for high-safety environments such as tunnels, bridges, and industrial zones.
3. Protection of Internal Absorptive Materials
Traditional barriers often expose absorptive materials directly to the environment, leading to:
Moisture damage
Dust accumulation
Material sagging or detachment
The perforated metal panel acts as a protective shield, ensuring:
Long-term acoustic stability
Extended service life
Reduced maintenance costs over the product lifecycle
4. Aesthetic Design & Customization
Modern projects demand both performance and visual appeal. Metal microporous noise barriers offer:
Custom perforation patterns: gradients, graphics, logos
Wide color options: RAL color customization
Clean, modern appearance: precise panel alignment and smooth finishes
This allows seamless integration into urban landscapes and architectural designs.
Applications
Transportation Noise Control
Highways
Urban expressways
High-speed railways
Metro systems
Airports
The lightweight yet strong structure is ideal for elevated installations and high-wind environments.
Industrial Noise Control
Factories and workshops
Air compressor rooms
Cooling towers
Generator units
Mining equipment
Resistant to oil, heat, and harsh industrial conditions.
Commercial & Public Facilities
Rooftop mechanical equipment
Substations
Pump rooms
Schools and hospitals
Stadiums
Provides effective noise reduction without compromising building aesthetics.
Tunnels & Underground Spaces
Installed on tunnel walls, microporous panels significantly reduce reverberation, improving:
Driving comfort
Traffic safety
Why Choose Our Metal Microporous Noise Barrier?
At Hebei Jinbiao Construction Materials Tech Corp., Ltd., we deliver complete, engineering-driven solutions:
✔ Precise Acoustic Design
We use professional acoustic simulation software based on:
Noise spectrum
Site conditions
Environmental standards
…to ensure compliance with project requirements.
✔ High Customization Capability
Fully customizable:
Panel patterns
Colors
Dimensions
Installation systems (posts, bases, connections)
✔ Strict Quality Control
All products undergo:
Acoustic performance testing
Coating adhesion tests
Salt spray resistance tests
Ensuring long-term stability in real-world environments.
✔ Full-Service Support
From:
Design
Manufacturing
Packaging & shipping
Installation guidance
We provide a one-stop solution for global clients.
Conclusion
Metal microporous noise barriers combine precision perforated panels with high-efficiency sound-absorbing materials, delivering:
Superior acoustic performance
Long-lasting durability
Modern architectural aesthetics
Whether for highways, rail transit, industrial facilities, or commercial buildings, this solution offers reliable, efficient, and visually appealing noise control.
Post time: Mar-30-2026