• Quieter Construction Methods
    Quieter Construction Methods

Some advanced quieter construction methods have been established. Performance and practicability of the equipment has been studied and approved on different construction sites in Hong Kong.


Spiral Wound Rehabilitation Technology

The Spiral Wound Rehabilitation Technology (SPRTMPE) is considered to be one of the quieter construction methods, compared to the traditional "open, cut and replace" method. Steel-reinforced polyethylene strips are spirally wound by using the winding machine. These strips are then joined together by fusion of polyethylene materials to form new pipes in the host pipe. This method eliminates the use of any air compressor and boiler. Besides, no friction noise is generated as the process of dragging the liner material into the host pipe is not required.