Drilling Industry Glossary
Drill Pipe
The heavy seamless tubing normally made of steel used to rotate the bit and circulate the drilling fluid. Joints of pipes, generally approximately 30 feet long, are coupled together by means of tool joints.

The heavy seamless tubing normally made of steel used to rotate the bit and circulate the drilling fluid. Joints of pipes, generally approximately 30 feet long, are coupled together by means of tool joints.