How to chose the “DTH drilling tools”？
1. Typically, there is a 3/4" to 1 12" difference in diameter between the drill bit and drill pipe. It is essential to guarantee that the air compressor can blow the slag at a speed of at least 10 m/s.
2. For mild rock, single-threaded DTH bits are appropriate, and 2-3 threaded front connections are preferable for hard rock. (More threads are simpler to dismantle than one.)
3. If drilling a broken rock formation is necessary, a DTH hammer with a retractable carbide button at the rear connection is preferable.
4. Due to the fragility of the nylon foot valve when in contact with water, DTH hammers for drill bits without foot valve are the best option for drilling aquifers.
5. High-frequency DTH hammers with tiny single impact energies are the ideal option for drilling soft rock formations since they extend the service life of the whole DTH drill string.
6. The adjustable air volume DTH hammer should be chosen for deep hole drilling or high water flow. use the air compressor's maximum capacity.
7. When drilling first begins, it is best to use reinforced drill pipe since it has a longer lifespan and is more cost-effective.
8. Reduce or eliminate the adapters that connect the drill pipe and DTH hammer.
9. The optional DTH hammer's air pressure and flow requirements should be compatible with the drilling rig's air compressor.
