Integral drill steels equipped with pneumatic & hydraulic rock drills ,widely used in granite and marble quarries, underground mining, for small blasting hole. Integral drill steels no need to match drill bits ,It can reduces the expense of impact energy, improves the drilling speed and efficience.
Integral drill steels
2)Shank size, hex19, hex22 and hex25
3) Length: 400mm-6400mm
4) Bit diameter: 22mm --45mm