Industrial acoustic engineering

Noise Control Product Centre

A coordinated range of vibration-isolation, enclosure, silencing and barrier products for industrial facilities, building services and transport infrastructure.

8 product familiesIndustrial & infrastructureBilingual product data

The information below is transcribed from product materials supplied by the company. Test standards, report numbers and current certification status must be verified before formal publication, specification or tender use.

Transport noise control

Metal Perforated Noise Barrier

A lightweight metal barrier system for railways, urban light rail and metro systems, high-speed railways, expressways, urban viaducts and residential boundaries affected by transport noise.

Typical applications

RailwaysLight rail & metroHigh-speed railExpresswaysUrban viaductsResidential boundaries

Supplied technical indicators

Item	Performance indicator
Noise Reduction Coefficient (NRC)	0.80; stated technical requirement ≥ 0.6
Weighted Sound Reduction Index (Rw)	34 dB; stated technical requirement ≥ 25 dB
Areal mass	19.8 kg/m²
Impact resistance	Maximum depth among four surface dents: 3.6 mm. Internal components remained undamaged with no displacement or fracture; the impact steel ball did not penetrate the outer wall and no cracking was reported.
Wind-pressure deformation	±4 kPa; maximum residual deformation 2.9 mm < 19.6 mm (LA/500); maximum elastic deflection 19.5 mm < 19.6 mm (LA/100).

Vibration control

Equipment Vibration-Isolation Base System

A vibration-isolation support platform shown in the supplied company material. The available sheet provides load, damping, deformation, operating-temperature and dimensional-tolerance indicators.

Supplied technical indicators

Item	Performance indicator
Load	50–3500 kg
Natural-frequency difference	10%
Damping ratio	≥ 0.05
Maximum allowable deformation	20 mm
Allowable deformation deviation	±10% (axial static stiffness and rated load)
Operating temperature	−15°C to 65°C
Overall dimensional operating deviation	±15 mm
Allowable horizontal warpage	L ≥ 1000 mm: ±3 mm; L ≤ 1000 mm: ±2 mm

Equipment noise reduction

Sound Insulation Room

Used widely for industrial equipment noise reduction, including generator sets, outdoor air-conditioning units, Roots blowers, cooling towers and ventilation systems.

Typical applications

Generator setsOutdoor HVAC unitsRoots blowersCooling towersVentilation systems

Low-noise testing environment

Quiet Room

Provides a low-noise testing environment for product and hearing applications across multiple industries.

Typical applications

Sound-insulation roomsAudiometry roomsElectro-acoustic test roomsPure-tone roomsSound-field roomsSpeech-training roomsBehavioural audiometryMedical hearing roomsMobile audiometryABR roomsElectromagnetic-shielding rooms

Equipment enclosure

Acoustic Enclosure

A simple modular enclosure that can be dismantled for installation and maintenance. The supplied description identifies flame-retardant, non-toxic, moisture-resistant and ageing-resistant characteristics, and recommends coordinated use with silencers and vibration-isolation pads for fan airflow and vibration noise.

Typical applications

Industrial machineryFans and blowersPlantroom equipmentVentilation equipment

Airflow noise control

Outlet Silencer

A high-efficiency airflow silencing product for power, petroleum, chemical, metallurgical, municipal, textile, cement and environmental applications.

Typical applications

High-pressure fansCentrifugal fansAxial-flow fansRoots blowers

Built-environment noise control

Community Noise-Control Silencer

A modular sheet-form structure designed for straightforward maintenance and replacement. Length can be configured to suit the required attenuation. The supplied material states attenuation of 15–20 Pa per metre, low regenerated airflow noise and low pressure loss.

Typical applications

Residential communitiesBuilding servicesBoundary noise treatmentVentilation paths

Ventilation systems

Duct Silencer

A duct-mounted silencing product for power, petroleum, chemical, metallurgical, municipal, textile, cement and environmental applications.

Typical applications

High-pressure fansCentrifugal fansAxial-flow fansRoots blowers

Source: product images and information sheets supplied by the company.

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