Оригинальное название: black diamond dth hammers
The Importance of Mud Evacuation
The Rising Demand for Drilling Equipment A Comprehensive Overview
The reason:
Inlet valve is not open or has silted
Suction line resistance is too high or blocked
Suction height is too high
The reason:
Inlet valve is not open or has silted
Suction line resistance is too high or blocked
Suction height is too high