Our company is a professional enterprise of pile foundation construction. This is our company's rock-socketed pile combined technology using a full-pipe rotary drilling rig + punching grab slag + down-the-hole hammer-into-rock. It is a very effective construction technology for the construction of rock-socketed pile foundations in complex geological layers (there are small beaded caves in the geological layer); it is also a construction method for the construction of general inclined piles.