drill
Product Details
The inner drill string rotates clockwise, and the casing rotates counter-clockwise.- Smooth drilling and extraction because the casing in rotation reduces friction.- Less noise and vibration-free.-
High degree of verticality.- Casing can be left in the hole as a permanent pile.
The inner drill string rotates clockwise, and the casing rotates counter-clockwise
- Country:South Korea
- telephone:82-82328172286-7
| The inner drill string rotates clockwise, and the casing rotates counter-clockwise |
