Effective length - 1,200 mm
1,200 mm
Diameter - 650 - 1,840 mm
650 - 1,840 mm
Casing - cased
cased
Range of application - Compact rock from 100 Mpa up to about unreinforced concrete 250 Mpa
Compact rock from 100 Mpa up to about unreinforced concrete 250 Mpa
Equipment - Kelly box 200 mm, easily exchangeable tapered roller bits with carbide pins, teeth and conveyance flights for transporting the drill cuttings. Easily exchangeable hard metal wear plates and hardfacing as wear protection
Kelly box 200 mm, easily exchangeable tapered roller bits with carbide pins, teeth and conveyance flights for transporting the drill cuttings. Easily exchangeable hard metal wear plates and hardfacing as wear protection