Rotary Percussive
Colcrete Eurodrill’s Rotary Percussive Systems are used in some of the toughest site conditions by the worlds leading geotechnical contractors.
Casing Crowns faced with buttons or plate tungsten carbide are available for each size of rod.
Blank pin threaded shoes can be supplied for each size of rod for coating with TC granular hard facing finish.
Our shank adapters incorporate a flushing box to suit all the combinations of hydraulic hammer heads currently available.
NB For Duplex drilling an additional short make up tube and short rod for drill steel coupler is required for discharge of return cuttings. (See diagram above)
Standard lengths: 1000 mm, 1500 mm, 2000 mm, 2500 mm and 3000 mm.
Other specifications can be produced to suit your requirements.
| Outside Diameter (mm) | Nipple Bore (mm) | Thread Type | Joints |
|---|---|---|---|
| 73 | 48 | Cylindrical/Conical | Coupled |
| 76 | 50 | Conical | Coupled |
| 89 | 64 | Cylindrical/Conical | Coupled |
| 102 | 72 | Cylindrical/Conical | Coupled |
| 114 | 88 | Cylindrical/Conical | Coupled |
| 133 | 108 | Cylindrical | Coupled |
| 152 | 127 | Conical | Coupled |
| 178 | 146 | Conical | Coupled |
| 194 | 159 | Conical | Coupled |
