down to hole hammer
1. Enhanced Performance The design of spiral drill bit teeth allows for better penetration rates compared to standard drill bits. This increased performance results in shorter drilling times and higher productivity.
dientes de bala de perforación en espiral

The Manufacturer’s Expertise
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
Blocked suction line or inadequate valve opening
The inlet pipe of the pump, the meter or the stuffing box are serious