About product
| Name |
twist drill bit |
| Brand |
Drills-King |
| Size |
¢28mm~¢300mm |
| Application |
geological exploration, coalfield mining,water well drilling and water conservancy and hydropower, etc. |
| Applicable Strata |
Soft and medium hard rocks, like Sandstone, Shale, Limestone, Conglomerate, Mable, etc. |
| Features |
About 10 times useful life than Carbide drill bitAbout 4 times useful life than Diamond drill bit |
Specifications of twist drill bit
| Type |
D(mm) |
H(mm) |
Wing Qua PDC bit for coal mine drilling ntity |
PDC cutter |
Waterpore |
| Shape |
Quantity |
Quantity |
D(mm) |
| ZW28A |
28 |
48 |
2 |
half |
2 |
1 |
5 |
| ZW28B |
28 |
48 |
2 |
whole |
2 |
1 |
5 |
| ZW30A |
30 |
48 |
2 |
half |
2 |
1 |
5 |
| ZW30B |
30 |
48 |
2 |
whole |
2 |
1 |
5 |
| ZW32A |
32 |
48 |
2 |
half |
2 |
1 |
5 |
| ZW32B |
32 |
48 |
2 |
whole |
2 |
1 |
5 |
| ZW42B |
|
