bomba de lama do impulsor
3. Reduced Hole Deviation DTH hammers produce straighter holes compared to rotary drilling tools. This precision reduces the need for corrective drilling, saving time and resources.
Производитель dth hammer

Second, the use and characteristics of the drilling rig:
1). Use:
Engineering anchoring drill can be used in urban construction, railway, highway, river, hydropower and other projects to drill rock anchor hole, anchor hole, blasting hole, grouting hole and other drilling construction.
Second, the use and characteristics of the drilling rig:
1). Use:
Engineering anchoring drill can be used in urban construction, railway, highway, river, hydropower and other projects to drill rock anchor hole, anchor hole, blasting hole, grouting hole and other drilling construction.