Noise barrier, also called sound barrier, is a type of fence barrier used in the highway, railway, residences and other places for sound insulation and reduction. Perforated metal noise barrier with light weight, firm structure durable and other features are popular in both industrial and commercial applications. Here are the detailed information of noise barrier, refer to them and choose the perfect one you like.

Noise barrier is a three-layer structure.

1. The first layer is the perforated metal sheet. The common material of perforated metal sheet is aluminum. Mild steel, galvanized steel or powder coated steel sheet are also available. The hole type of perforated metal sheet can be micro holes or louver holes.
2. The second layer is sound absorbing material infill. The sound absorbing material has excellent sound or noise absorbing performance, it can reduce the noise and keep quite. The main infill material is glass wool. Other absorbing materials are available.
3. The third layer is metal sheet. The material of metal sheet is same as the perforated metal sheet. But there is no any hole on the metal sheet.

Material: Stainless steel sheet, mild carbon steel sheet, aluminum steel sheet. 
Surface treatment: plain, powder coated.
Panel thickness: 80 mm, 100 mm, 120 mm.
Length: 1960 mm, 2460 mm.
Width: 500 mm.
Plate thickness: 0.5-1.2 mm.
Flange plate (mm): 250 × 250 × 10, 300 × 300 × 10, 350 × 350 × 10, 400 × 400 × 10.
H-post (mm): 100 × 100 × 6 × 8, 125 × 125 × 6.5 × 9, 150 × 150 × 7 × 10, 175 × 175 × 7.5 × 11.
Types of sheet surface: flat panel, uneven panel.
Types of sheet hole: round hole, louver hole.
Types of barriers shape: common shape, arc shape, knuckling shape, top arc shape, top knuckling shape, irregular shape.