Drill deeper than the other device to hit the hole, with its own structure and working principle is to have a great relationship, then follow the drill manufacturers together to get to know about it:

Principle of drill rock and heavy rock drills, intermittent rock, continuous rotation, unlike the drill a DTH impact bodies mounted on the front of the drill pipe, and manhole bottom, directly impact drill of the piston, and the extension of the drilling, push.

Down-hole drilling equipment Rod drilling rigs like no other, the energy losses increase with increasing drill Rod joint, because it can impact drill pipe of not passed, so the impact energy loss, so you can play deeper holes.

That's down-the-hole drilling rig manufacturers give you the summary of reasons, we welcome the friends from all sides to come to the Guide.