Rehabilitation methods that address ground deformation caused by earthquakes and bending due to ground subsidence.
The "Polyethylene Compact Pipe Method" involves pulling a C-shaped high-density polyethylene pipe, wound on a drum, into an existing pipe through a manhole. It is restored to a circular shape using steam heating and compressed air, tightly adhering to the existing pipe, and is a method for rehabilitating aging existing pipes. The method is primarily designed for construction with diameters ranging from φ200 to φ350mm. It possesses self-supporting pipe strength and has a high elongation rate of over 350% at the time of fracture, making it capable of accommodating ground deformation and bending caused by earthquakes and ground subsidence. Since the rehabilitation material itself is resistant to breaking and cracking, it is suitable for seismic retrofitting. 【Features of Polyethylene Compact Pipe】 ■ Uses polyethylene that is very stable in quality and environmentally friendly ■ Rehabilitation material that can be used not only for sewer systems but also for water supply systems ■ Easy quality control of materials allows for speedy construction ■ Capable of accommodating ground deformation and bending caused by earthquakes and ground subsidence ■ Has the ability to conform to existing pipes *For more details, please refer to the PDF document or feel free to contact us.
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【Construction Flow】 ■ Cleaning and preliminary survey inside the pipe ■ Welding work for the inlet end and welding work for the steam side end ■ Material pulling work ■ Steam heating work and diameter expansion cooling work ■ Pipe installation perforation work and pipe end finishing work *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Our company specializes in the overall "investigation, pipeline rehabilitation, and water-stopping work" of underground buried pipes such as sewer pipes and power conduits. In particular, in the sewer division, we focus on the investigation and rehabilitation of lifelines, and we are also involved in the development of construction machinery, striving to maintain a flexible response to maintenance and management. With a focus on environmental safety measures, our motto is "safety, maintenance, and rehabilitation" for facilities, so please feel free to consult us regarding the above-related matters.