down the hole hammer drill
The reason:
The suction pipe is not filled with water
Blocked suction line or inadequate valve opening
The inlet pipe of the pump, the meter or the stuffing box are serious
The reason:
The suction pipe is not filled with water
Blocked suction line or inadequate valve opening
The inlet pipe of the pump, the meter or the stuffing box are serious
สรุป
- Construction For foundations, pilings, and site preparation, DTH techniques enable precise hole placement and stability in challenging geological conditions.
4, the selection of rolling drag plate, the track is not easy to wear.
4, the selection of rolling drag plate, the track is not easy to wear.