Grundoburst 400G / 800G Pipe Burster

Grundoburst is a static pipe bursting system for replacing a failing pipe along its existing line, without having to dig a trench along the route. You can burst cast iron, steel, uPVC, PE, AC, stoneware and GFRP pipes and pull the new pipe in behind the bursting head on the same pass. With the 400G you can replace old pipes from 50mm to 250mm diameter, and with the 800G from 80mm to 400mm.

Typical Grundoburst jobs

Our customers use Grundoburst where the old pipe is past repairing but where digging it out would be too expensive. Typical jobs include:

• Water main renewal
• Sewer renewal
• Gas main replacement
• Replacing deteriorated utility pipe
• Pipe replacement beneath roads, driveways and hard standing
• Upsizing an existing pipe to increase its capacity
• Renewal where open-cut excavation would be too disruptive

How static pipe bursting works

Static bursting runs between two small pits, one to launch from and one to receive, leaving the ground in between untouched.

The operator first pushes a string of QuickLock rods through the old pipe until they reach the reception pit. There the crew couple a bursting head, an expander and the new pipe onto the end of the string, and the rig pulls the whole assembly back along the old line.

What happens to the old pipe depends on what it is made of. The blades cut tough materials such as steel, ductile iron and PE. Brittle materials such as cast iron, stoneware, concrete and asbestos cement break instead, and the expander presses the fragments out into the surrounding soil. Either way, the new pipe follows into the space as it opens up.

The word static refers to how the force is applied. The rig pulls steadily on the rod string from the launch pit, and all the cutting and breaking comes from that pull.

Which Grundoburst do I need?

What comes with Grundoburst hire?

Each Grundoburst rig is supplied with 100m of QuickLock ladder rods and the remote control, and we can supply extra rods on request. We hire for short or long periods and deliver nationwide.

We match the bursting head and expander to the material and diameter of the old pipe. The crew then use a towing head to connect the new pipe to the back of the assembly. Tell us the pipe you are replacing and the pipe going in, and we will specify the tooling.

Every rig comes with safe use instructions, and we can run familiarisation training with your team before work starts. If your launch and reception pits need shoring, we also hire trench boxes and shoring equipment.

Benefits of the Grundoburst Pipe Burster

• Renew pipes without having to dig a full trench
• Simple installation allows a rapid start to works
• Low weight for easier manoeuvrability on-site
• Replace old pipes with even larger diameter pipes
• Can be operated by one person

Common Questions

Hire the Grundoburst Pipe Burster

If you would like to speak to one of our expert team about the Grundoburst pipe burster or any of our other trenchless technology products, please contact your nearest depot.