Rotary drilling machine, also known as pile driver. It is a comprehensive drilling rig, for its usage of a variety of bottom layers, the characteristics of fast forming layers, less pollution, and strong mobility.
[pdf] In the period from Nov 2023 to Oct 2024, 3,259 suppliers were active, with SANDVIK MINING CONSTRUCTION LOGIS, SANY AUTOMOBILE MANUFACTURING CO LTD, and MAIT SPA accounting for 63% of World total Drilling Rigs exports.
[pdf] A rotary drilling rig works by rotating a drill string, which applies downward pressure to a drill bit that grinds the earth. Drilling fluid or air is pumped down the drill string to cool the bit, carry cuttings to the surface, and stabilize the borehole.
[pdf] 
