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Pipe Lining - Rehabilitation Without Excavation
 
       
   
 

Frequently, aged and/or damaged buried water mains and drainage/sewerage pipes need to be repaired/rehabilitated to prevent further loss of precious water from water mains and/or to reduce pollution arising from leakage of sewage or surface runoffs.

Conventionally, the replacement or rehabilitation of these pipes would involve the traditional open cut excavation methods where, at most areas in Hong Kong, would mean nuisances (at times, on a major scale) to traffic & public convenience (noise, visual, odour effects) and even safety hazards to the public.

 
 
     
 

BUDA has the solution to repair and rehabilitate such type of damaged pipes whilst causing minimum disruption to the lives of the public.


The technique of Pipe Lining without excavation (Picture 1, Picture 3, Picture 4, & Picture 5) enables Hong Kong residents to continue travelling, working and playing above ground while repairs and maintenance are being carried out to drainage and public water supply systems below ground.


The solution to this serious problem is to adopt an "Advanced Trenchless Technology", such as the "Drainliner" system.(Picture 2)


This technology meets the need to keep traffic moving without interruption above ground while permanent repairs are being carried out below ground. As a result, Hong Kong will continue to function normally and will not come to a halt while road works are carried out. Our continued progress is assured due to this ingenious and innovative system will also ensure a more predictable works programme due to minimum disruption.


BUDA offers this professional service to solve Hong Kong's drainage and water supply problems.


The primary benefits of Pipe Lining are:

Restoration :
- Adds structural integrity to old, damaged, irregular-sized or odd-shaped pipes. Prevents leaks and intrusion by roots from trees, plants, etc.

Improvement :
- Seamless installation eliminates joints and increases flow.

Cleanliness :
- No piles of evacuated dirt to hide or to cause local complaints about pollution visual, water,odour impacts)

Durability :
- Designed to last fifty years, even in corrosive conditions.

Cost Effectiveness :
- "No Dig" trench-free technology saves manpower and work completion time with 30% to 50% savings in costs.

Picture 6 and 7 illustrate the internal conditions of the damaged pipe section before and after pipe lining, respectively.

Picture 1: Steel Lining -Structural Part Repair
 
Picutre 2:
 
Picture 3: Trimming for the finished inversion
 
Picutre 4 : Finished Lining
 
Picture 5: Layout of Liner bay
 
Picture 6: Before Lining
 
Picture 7 : After Lining
 
Picture 8: A typical process of a Pipe Lining
 
 
 
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