Tunnelling

Forepoling, also known as tube umbrella, is an application used to strengthen tunnel roof in broken rock conditions. Drilling system consist of casing tubes which are drilled through the overburden as an umbrella and filled with grouting. Robit® Casing System allows easy driving of the casing tubes into the ground with low torque demand. In modern forepolling also fibreglass casings can be used for ultra-long facebolts.
Robit® Casing Systems mostly used in forepoling are RoX+ 99,9/8,ROX 114,3/10 and RoX 139, 7/10. More information at www.robit.fi
Please download Robit® Forepoling Product Catalogue

Product range

Drifting and Bolting Top Hammer Bits, Rods and Shanks

Enhanced by more than 30 years experience in drilling all around the world Robit® Plc has developed a button bit series for construction quarrying, and mining customers. The Robit® HTG Series covers all the diameters used in various top hammer drilling applications. In tunnelling applications Robit® HTG Series have shown outstanding performance globally.

All the Robit® button bits are manufactured of 100% recyclable "Green Steel". In the environmentally friendly steel production process the CO² emissions have been reduced 80% and 95% of the waste is recycled including the process smoke which is filtered. The new steel grade gives even more uniform properties and improved fatigue strength which is crucial in rock drilling process.

Drill Rods, Shank Adapters and Couplings are produced from the carefully selected hollow drillsteels. Robit drill rods provide the advantages of the maximum strength with long thread lifetime.

  • Hexagonal Drifter Rods, Single and Tandem Thread Rods, Male-Female Rods.
  • Available with most types of threads

Thanks to the specially developed alloys, Robit® shank adapters are with optimum hardenability and balance of core and case properties to offer extended wear and fatigue life.

  • Compatible with most types of drills in the market

More information at www.robit.fi

Enquire Now

Invalid Input
Invalid Input
Invalid Input
Invalid Input
Invalid Input
Invalid Input
Invalid Input
Enter the correct answer.