Business

Technical Introduction

Without excavating the ground, a conical bursting head and
blades fracture the existing pipe and replace it with a new pipe connected at the rear.
A trenchless replacement method for pipelines installed in sections where excavation is difficult due to underground utilities and in narrow areas where excavation equipment cannot easily access.

Connect the bursting head and the new pipe at Work Pit A, and install pulling equipment at Work Pit B for pulling.
The new pipe is installed along the alignment of the existing pipe,
and fragments of the fractured existing pipe remain around the new pipe
Applicable to all pipe types, and a PE multi-layer coated pipe is used to protect the new pipe.

What is Trenchless Replacement?

∙ Without excavating the ground, a conical bursting head and blades fracture the existing pipe and replace it with a new pipe connected at the rear. ∙ A trenchless replacement method for pipelines installed in sections where excavation is difficult due to underground utilities and in narrow areas where excavation equipment cannot easily access.

PE Multi-Layer Coated Pipe

High strength with wear- and corrosion-resistant materials, preventing damage caused by long-term corrosion. Chemically resistant, so it does not deteriorate over time. The inserted PE pipe enables full structural reinforcement, making it resistant to external loads and impact. High flexibility ensures safety even in earthquakes, differential settlement, and ground deformation caused by groundwater leakage. Reduced maintenance frequency and less time required for maintenance.

Removal of Multiple Pipes and Abandoned Pipes

∙ When obstacles (telecommunication conduits, gas pipelines, etc.) are installed around the pipeline route
leaks from direct branching of drainage pipelines to households (end users), or from abandoned pipes frequently occur.
> Contributes to improving the water supply rate by using trenchless technology to replace aging buried pipes, organize multiple pipes, and remove abandoned pipes.

Small Diameter
(D15mm ~ D80mm)

∙ Applicable up to existing 90-degree bends by using multi-stage connections of expansion and bursting heads. ∙ Equipment configuration : pulling unit, Power Pack, Wire, burst head.

Category	Specifications
Applicable Diameter	D15mm ~ D80mm
Existing Pipe Type (Aged Pipe)	All pipe types except SP and DCIP
Replacement Pipe Type (New Pipe)	PE (Polyethylene) Multi-Layer Coated Pipe
Applicable Distance	50m
Pulling Member	Wire
Pulling Force	Max. 15, 30ton

[Pulling Unit(15ton)]

[Pulling Unit(30ton)]

[Power Pack]

Medium Diameter
(D100mm ~ D500mm)

∙ The bursting head is manufactured larger than the inner diameter of the existing pipe to reduce friction and secure the required space for installing the new pipe. ∙ Equipment configuration : pulling unit, Power Pack, Steel rod & Wire, burst head.

Category	Specifications
Applicable Diameter	D100mm ~ D500mm
Existing Pipe Type (Aged Pipe)	All pipe types
Replacement Pipe Type (New Pipe)	PE (Polyethylene) Multi-Layer Coated Pipe
Applicable Distance	100m
Pulling Member	Steel rod & Wire
Pulling Force	Max. 50, 100, 150ton

[Pulling Unit(50ton)]

[Pulling Unit(100ton)]

[Power Pack]

Sewer Pipeline Replacement(Using Existing Manholes)

∙ To apply this technology without excavation, a pulling jig that can be used inside the manhole is applied. ∙ Development of a dynamic bursting head to miniaturize pulling equipment.(minimizing pulling force) ∙ Implementation of a sequential connection approach to insert the new pipe from inside the manhole.

[Manhole Jig]

[Dynamic Bursting Head]

Category	Specifications
Applicable Diameter	D200mm 이상
Existing Pipe Type (Aged Pipe)	전관종
Replacement Pipe Type	PVC 또는 PE(Polyethylene)
Applicable Distance	50m 이상
Pulling Member	Wire
Pulling Force	Max. 30ton