|
ONE、basic
parameter |
| type |
IADC Categorised
code name |
KN/mm of
bit diameter |
joint screw thread |
bit weight(Kg) |
|
| inch |
mm |
||||
| KX42-150 |
422 |
57/8 |
150 |
31/2REG |
|
| KX43-150 |
432 |
57/8 |
150 |
31/2REG |
|
| KX42-159 |
422 |
61/4 |
159 |
31/2REG |
|
| KX43-159 |
432 |
61/4 |
159 |
31/2REG |
|
| KX54-200 |
542 |
77/8 |
200 |
41/2REG |
|
| KX64-200 |
642 |
77/8 |
200 |
41/2REG |
|
| KX74-200 |
742 |
77/8 |
200 |
41/2REG |
|
| KX84-200 |
842 |
77/8 |
200 |
41/2REG |
|
| KX42-250 |
422 |
97/8 |
250 |
65/8REG |
|
| KX54-250 |
542 |
97/8 |
250 |
65/8REG |
|
| KX64-250 |
642 |
97/8 |
250 |
65/8REG |
|
| KX72-250 |
722 |
97/8 |
250 |
65/8REG |
|
| KX74-250 |
742 |
97/8 |
250 |
65/8REG |
|
| KX84-250 |
842 |
97/8 |
250 |
65/8REG |
|
| KX72-311 |
722 |
121/4 |
311 |
65/8REG |
|
| KX73-311 |
732 |
121/4 |
311 |
65/8REG |
|
|
TWO、Recommend
using parameters |
| bit |
hardness coefficient
of rock：f |
drilling weight newton/cm of bit diameter |
Rotational speed
of recommendation r/min |
| 4 |
<7 |
3430~7850 |
90~120 |
| 5 |
7~10 |
3920~8340 |
80~120 |
| 6 |
10~12 |
4900~8830 |
60~100 |
| 7 |
12~16 |
5880~11770 |
50~80 |
| 8 |
16~20 |
6870~14710 |
50~80 |
|
THREE、According to the ablation bit classification
of choice of rock |
