Perforated Acoustic Noise Barrier Panels for Highways, Railways and Construction Zones

We supply metal perforated panels filled with sound absorbing materials for highway and railway noise barrier wall system.

Perforated noise barrier is a type of acoustic barrier widely used along highways, railways, roads, MRT subways and industrial zones to reduce traffic noises and sound pollutions.

Noise barrier panels are typically made of perforated galvanized steel or aluminum combined with sound-absorbing infill rock wool or glass wool. The perforations allow sound waves to enter the panel to be absorbed by the acoustic material rather than reflected back.

Featuring effective noise reduction, good ventilation, durability, and corrosion resistance, perforated noise barrier panels are suitable for long-term outdoor infrastructure and highway noise control projects.

We supply perforated noise absorbing panels in three typical structures as following:

Perforated metal facing + acoustic infill + solid back panel (sandwich structure)
Steel frame system with modular perforated acoustic panels
Double-layer perforated panels with mineral wool core

Perforated Acoustic Panels for Highway Noise Barrier Wall Construction

Perforated sound barrier panels of various International standards available for different projects.

We supply perforated metal noise barriers with Sound absorption up to 28 dB (Class B3 under EN 1793) for European highway and railway noise barrier projects.

Perforated Noise Barrier Panels European Standard

External casing: 1.0 mm, painted, solid galvanised steel external casing
Internal sound absorbent material: mineral wool padding, with a thickness of 60 mm and density of 90 kg/m³
Panel Cover: 1.0 mm, painted, galvanised steel plate cover, perforated in 6 different diameters ranging from 2.5 to 7mm (the holes form 34% of a strip of plate)
Features: High sound absorption in an extensive range of frequencies;
Ends: Polypropylene plugs which seal the ends of the panel.

Acoustic noise barrier panels ends and finish:
The panels are joined one to the other with a double male-female anti-acoustic bridge joint and inserted into HE-type wing beams.
The panels are polyester powder coated with oven polymerization, after the entire sheet metal processing cycle, color chosen from the Ral color range.

Noise control perforated acoustic panels specifications:
- Fire behaviour: Euroclass A1 (not inflammable);
- Weight: around 24 Kg/m². (± 5%).
Sound insulation:
- Classified according to UNI EN 1793-1-3 DLR = 28 dB Class B3 - Rw = 34 dB
Sound absorption:
- Classified according to UNI EN 1793-2-3 DLα = 20 dB Class A5

Metal Noise Protection Panels for Highways are supplied commonly in sizes:
Thickness: 95 mm. - width: 500 mm.
length: max 4 metres.

Other certified features:
Horizontal load resistance according to UNI 1794-1-3:
project wind load 1.6 kN / m2. on a 3.0 meter wheelbase
project wind load 1.3 kN / m2. on a 4.0 meter wheelbase
Resistance to the danger of falling fragments according to UNI 1794-1-3:class C3.
Fire resistance from brushwood according to UNI 1794-1-3:class 3.
Determination of light reflection according to UNI 1794-1-3:max BSM 30.4.

Perforated noise barrier panels can be used with highway guard rails and other materials to form composite fencing and barrier systems for highway and roads traffic:

With guardrails crash barriers: lower safety barrier + upper perforated noise panels;
With highway safety fences: shared posts supporting steel fencing and acoustic panels;
With wind-breaking panels: noise barrier below + wind-control panels above;
With transparent panels: perforated acoustic panels combined with transparent (PC/PMMA) noise barrier;
With concrete walls: solid concrete for low-frequency noise + perforated panels for absorption

We supply perforated noise barrier panels in two materials: Aluminum, Steel Hot Dipped Galvanized.

Features of perforated metal noise barrier panels:
Effective sound absorption;
High strength and impact resistance;
Weather and corrosion resistant;
Lightweight and modular;
Fire resistant;
Stable acoustic performance (Class B3, EN 1793).

Highway Noise Control Barrier: Guard Rail Beams + Sound Barrier Panel Composite System

Noise barrier panels installed behind highway guard rails

Perforated acoustic sheet together with galvanized steel guard rail beams to make up the whole barrier system for highway and bridges.

We supply perforated noise barrier panels with H beam support and other accessories:

Perforated Sound Barrier Panel thickness: 80mm, 100mm,120mm
Size: 2500x500x80mm, 2500x500x100mm, etc.
Metal plate thickness: 0.5-1.2mm
H-beam post: 100x100x6x8mm, 125x125x6.5x9mm, 150x150x7x10mm, 175x175x7.5x11mm.
Flange plate: 250x250x10, 300x300x10, 350x350x10, 400x400x10mm etc.

We also supply guard rail beams for highway uses together with noise barrier panels:

Three or Two Wave Steel Beams for Highway and Road Traffic Control
Steel Plate Thickness: 3.0mm or as required
Wave height: 85mm
Width: 310mm
Length: 4320mm or as required
Zinc coated: 350-600g/m2

Guard rail materials: Cold rolled steel and hot dip galvanized

Guard Rail Accessories:
1. Post: U post, C post, Sigma Post, Circle Post, with flange or not
2. Spacer (Blocker): U shape. C shape.etc.
3. Bolt and nuts: M16x35, 40,45,50,150, 170
4. Terminal ends: fishtail, and bull nose.
5. Reflector

Perforated Metal Sound Insulation Noise Barrier for Public and Civil City Construction Projects

Temporary Sound Control Perforated Panels and Permanent Noise Barrier
We supply temporary noise barriers for various commercial buildings, construction projects and installation projects. The metal panels can be used around the sites to reduce the construction noise and bring it down to acceptable levels.