Main parameters of tower PDC reaming drill bit
specifications | collar hole bit | buckle | blade number | nozzles add water holes | rock level | compound sheet specifications |
Diameter mm | Diameter mm | Drill bit Drill end | | | | 13 | 16 | 19 |
190mm | 118mm | Internal/External thread | 3,4,6 | 3,4,5 | F=10 | ✔ | ✔ | ✔ |
220mm | 138mm | Internal/External thread | 3,4,5,6 | 3,4,5,6 | F=10 | ✔ | ✔ | ✔ |
250mm | 138mm | Internal/External thread | 4,5,6 | 4,5,6 | F=10 | ✔ | ✔ | ✔ |
311mm | 152mm | Internal/External thread | 4,5,6,7 | 4,5,6,7 | F=10 | ✔ | ✔ | ✔ |
350mm | 180mm | Internal/External thread | 4,5,6,7 | 4,5,6,7 | F=10 | ✔ | ✔ | ✔ |
380mm | 180mm | Internal/External thread | 4,5,6,7 | 4,5,6,7 | F=10 | ✔ | ✔ | ✔ |
450mm | 215mm | Internal/External thread | 45,6,7 | 4,5,6,7 | F=10 | ✔ | ✔ | ✔ |
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Type :- Type tower drill separated tower drill combined tower drill
Features: High flexibility. In large hole drilling, according to the geological structure and drilling technology requirements, the choice of drill bit is more flexible. The one-piece tower drill uses fin welding processing, and the size of drill bit can be customized according to customer requirements. The processing cycle is short, and the combination of drill bit is convenient and fast
Fast drilling speed. Designed for soft rock, the baby Angle is increased, diameter protection is lengthened and alloy falling welding is carried out to ensure the drilling speed and strengthen the drilling rate.
Low cost of use. Large hole drilling and hard rock drilling, often require one or three drilling, the choice of the number of bits required to increase the cost of the high separation tower
Drilling, you can choose the first drilling bit as the collar hole bit, and then add the second or third drilling reamer bit to form the tower bit, saving the use cost.
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