forage souterrain
- الصناعات الثقيلة تلعب دورًا رئيسيًا في عمليات التصنيع، حيث تستخدم في تشغيل الآلات وتغدية سلسلة الإنتاج.
3. DTH Drills (Down-The-Hole Drills) These drills are known for their efficiency in drilling deep holes in hard rock. They feature a hammer located directly on the drill bit, which creates high-frequency impacts, breaking rock more effectively.
2, according to the aperture is not the same, the drill can be divided into light drilling rig, medium drilling rig, heavy drilling rig.
2, according to the aperture is not the same, the drill can be divided into light drilling rig, medium drilling rig, heavy drilling rig.