Pipeline noise reduction is the way by technical or special materials to reduce or absorb the noise of piping system running, such as the sewer pipes, the ventilation duct, to improve the comfort of living or working environments. The following are the main methods and principles of pipeline noise reduction treatment:

1. Soundproofing material wrapping‌

Soundproofing cotton‌：porous and loose materials (such as rubber insulation cotton) can convert sound energy into heat energy by reflecting, refracting, and absorbing sound waves, thereby reducing noise propagation. Soundproofing cotton is usually tightly wrapped around the outside of the pipeline to ensure no gaps and achieve optimal results。

Damping pad‌：A damping material made of rubber material that can absorb and consume the energy generated by pipeline vibration, thereby reducing noise. Usually, it is best to stick it on the outer wall of the pipeline first, and then wrap it with soundproof cotton for better results.

2. Fixed and packaging technology‌

Wire binding‌：although aluminum foil tape is easy to use, it may peel off over time, affecting the sound insulation effect. Using metal wire to tie sound insulation cotton can ensure the durability of the sound insulation effect.

Whole package riser treatment‌：after being wrapped in soundproof cotton, using light steel keel or lightweight bricks to enclose the pipeline can reduce noise and prevent moisture.

3. Comprehensive noise reduction measures‌

Finished pipe sealing treatment‌：on the basis of wrapping the riser, further apply finished pipe sealing treatment to optimize the sound insulation effect while considering practicality.

Noise control of pipeline air outlet‌：for ventilation ducts, use mufflers or shock absorbers to reduce airflow noise and duct vibration.

Summary‌：The core of pipeline noise reduction treatment lies in starting from the sound source and propagation path, effectively reducing noise and improving environmental comfort through technical means such as sound insulation materials, silent pipelines, and shock absorbers.

Feature：

* Obvious effect to reduce noise, use complex structure design,combine isolation、 sound absorb、soundproof together, the efficient of noise reduce is good, according the fact test, it’s can reduce noise 15-30 dB;

* Easy to install, board is light and elasticity,cut easily,can follow various sizes’ special shape pipe, can cut board at the scene;

* Board can do flexible combination, can according the noise feature do combination, then the noise reduce can achieve the max;

* The material of soundproof and noise reduce has good fire proof performance-Class A,  nonflammable(or can meet standards Oxygen Index≥30%)