Item: | Core barrel with roller bits |
| Diameter: | 800~2800mm or customized |
| Bits types: | 81/2'' IADC 637 |
Shell Thickness: | 20mm |
| Stiffening Ring Thickness: | 45mm |
| Kelly box: | 200 or 250mm |
| Adaptation Formation | Hard rock ≥ 80 Mpa |
| Industry | Bored hole pipe contractor/Deep foundation construction |
| Drilling Rigs Applicable | Bauer,Soilmex,Casagrande,Sany,Sunward,XCMG,Jint,Zoomlion,CRRC,Yutong |
Size unit: mm
| Cutting Dia. | Shell Dia. | Shell Hit. | Stiffening Ring Hit. | Shell Thk. | Stiffening Ring Thk. | Teeth No. |
| 800 | 720 | 1800 | 250 | 20 | 45 | 6 |
| 1000 | 920 | 1800 | 250 | 20 | 45 | 8 |
| 1200 | 1120 | 1800 | 250 | 20 | 45 | 10 |
| 1400 | 1320 | 1500 | 250 | 20 | 45 | 12 |
| 1500 | 1420 | 1500 | 250 | 20 | 45 | 12 |
| 1600 | 1520 | 1500 | 250 | 20 | 45 | 14 |
| 1800 | 1720 | 1500 | 250 | 20 | 45 | 16 |
| 2000 | 1920 | 1500 | 250 | 20 | 45 | 18 |
| 2200 | 2120 | 1500 | 250 | 20 | 45 | 20 |
| 2400 | 2320 | 1500 | 250 | 20 | 45 | 22 |
| 2500 | 2420 | 1500 | 250 | 20 | 45 | 24 |
| 2800 | 2720 | 1500 | 250 | 20 | 45 | 26 |
High quality of material steel of Q355B,high hardness and good wear resistance.
Full guide strips on the shell,protecting the shell and guide out the gravel.
Good drilling efficiency , 50~60cm per hour.
Overall aftersale service, one-stop piling solution provided