outils de forage souterrain pdf
7. Drive Mechanism
5. Eccentric Shaft
1. Helical Design The most striking feature of spiral drill bits is their helical shape, which improves the efficiency of cutting and drilling. This design allows for smoother penetration into materials, reducing the likelihood of the bit becoming stuck or overheating.
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.