Pipeline replacement without excavation,
WEL pipe bursting construction!
When replacing old pipes, most depend on the method of excavating
the ground and replacing the buried pipe. Therefore, the excavation method (open-cut) is
likely to damage other facilities, and the expansion of construction work cause a lot of budget,
traffic congestion, complaints.

Especially, most small-diameter pipes are buried in a narrow alley where the excavation equipment is
difficult to enter. Therefore, there are many problems in terms of workability,
economical efficiency and safety when performing replacement by manual excavation method.
In many cases, they are left unattended without actual construction.

If new or replacement pipeline construction is carried out without
excavation of the ground, the construction period can be shortened and
the budget can be saved, as well as inconveniences caused by excavation
of the ground and civil complaints can be reduced.
Pipe Bursting
  • ·A method of using the cone rupture / crushing head and blade to crush the existing tube and replace the tube with a new tube connected to the rear
  • ·Connect the shredding head and new pipe to the A work zone and install pulling equipment in the B work zone for pulling
  • ·The new pipe is buried at the existing pipe location, and the shredded existing pipe remains around the new pipe
  • ·Applicable to all types of pipes, and polyethylene multiple cladding is used in new pipes for protection
  • ·Before replacing the existing old pipes, underground pipe locating method is carried out proactively in order to minimize the increase of the excavation area and the risk of breakage of other obstacles
  • ·Multistage connection of shredding head and expansion HEAD to crush pipes enables construction in 90 ° elbow section (small diameter)

※ Establishment of quantity per unit for Pipe Bursting of old pipe by using pipe crushing propulsion method’ [Korea Water and Wastewater Association]

※ Selected as 2017 k-water Creativity and Innovation Concert grand prize ‘Non-drilling replacement method for local waterworks old pipes’

Category For small diameter For medium diameter
Target pipe diameterD15mm~D80mmD100mm~D700mm
Target pipe type (old pipe)All kinds of pipesAll kinds of pipes
Solid pipe type (new pipe)PE(Polyethylene)PE(Polyethylene)
Traction deviceWireSteel rod
Pulling powerMax. 25 tonMax. 100 ton
Bent pipe passage×
Principle of Pipe Bursting
  • Traction device
  • Shredding head
  • Existing pipe shredding