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The new Generation
FLUID-ASSISTED HDD RIGS
Fluid-assisted mini drill rigs
Soil displacement hammers
Dynamic ramming systems
Auger boring unit
Static pipe bursting systems
Dynamic pipe bursting systems
Core drill units
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HDD Drilling Fluid Recycling
Maxi HDD rigs
TO BRING THE ESSENTIALS FOR LIFE TO EVERYONE
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Fibre optic networks
Natural gas distribution networks
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GRUNDOMAT - P
On target every time
PISTON SEAL, SLIDE BELTS & CUTTING HEAD SEAL
Guarantee great efficiency and low air consumption while preventing dirt from getting inside and causing power to be lost.
between forward and reserve gear.
Switching over from one forwards to one reverse gear under operating pressure by 1/4 turn to the left of the compressed air hose.
Optional switching over between one forward and reverse gear under operating pressure by throwing the lever.
WORKING PRINCIPLE STEPPED HEAD
The stepped head is universally applicable as it can work in every kind of displaceable soil. The tip of the cutter bit starts a preliminary pilot bore and then the soil is gradually displaced to the outside. The steps of the head shatter the obstacles before discharging them. This modus operandi guarantees high running stability and a strong, wide pressure cone is generated in front of the stepped head.
Stroke one applies impact to the cutter bit with the piston, thus forcing the head to generate the bore hole and eliminate obstacles. The impact energy is concentrated on the cutter bit and the bore head.
During the second stroke, the bore head moves freely in the bore hole and the piston aims the impact right up to the casing. The impact power of the piston is concentrated on the casing, the complete machine (with the pipe attached) moves up from behind.
The two-stroke principle helps to overcome peak resistance and coat friction so the highest possible directional stability of the GRUNDOMAT is achieved.
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P Standard version
PK Short version
The short displacement hammers are excellent for the application in confined spaces.
Fast and safe installation of gas service lines in tough conditions
While it is often assumed that individual methods of trenchless installation tools and technology compete for projects, that’s not always the case. On a recent gas main and service replacement project, contractor Underground Construction Co. Inc. headquartered in Benicia, CA, was able to effectively employ the soils displacement method and horizontal directional drilling for installing approx. 3 kilometres of gas mains and about 120 gas service connections. The project was completed at a golf course retirement community in Sun City West, Arizona.
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