A bar in a drilling tool that connects the drill to transmit power. Drill pipe is the rod that connects the drilling tool to the drill bit and transmits power during drilling operations. Drill pipe is a piece of steel pipe with a thread at the end, but it must be strong enough to withstand the pressure, torque and other forces of drilling a hole. During drilling the drill pipe carries drilling mud to the bit and rises and falls accordingly. Drill pipe can be divided into 1 meter, 2 meters, 3 meters and 57 and 65 meters according to the size of the drill pipe. It is the most practical for hitting soil, rock and sand.

Drill pipe can be divided into one meter, two meters, and three meters in length, and 57 and 65 in size.