1. The drill rods strong energy of single impact and the low energy consumption in rock crushing;

2. The weight ratio of Piston and Bit almost reached 1:1 to provide long effective acting time, which

    leads to the improved efficiency in rock crushing and the extended service life of the drilling tool;

3. The Integral rods good performance in central air exhaust and cuttings discharge, which reduces

    the repeated crushing of rock;

4. A check valve device is available to drill holes under water.

    The HR Series DTH Hammer, an ideal drilling tool, is widely used in such industries relating to

    energy,transportation, metallurgy, building etc.