Hardbanding: The tool joints and sometimes the body of the short drill pipe can be hardbanded for increased resistance to wear and corrosion.
End Connections: The end connections are typically API connections that allow the pipe to be joined to other components in the drill string.
Grade: The grade of the short drill pipe refers to the strength and durability of the pipe. The grade is often determined by the yield strength of the material.
Short drill pipe is a tool for adjusting the interval length of the drilling tool to reach a certain technical purpose in the process of drilling. According to the shape of the shoulder, it is divided into a sloping shoulder structure and a straight shoulder structure.
Short drill pipe series products are mainly used for oilfield user convenience with drill pipe columns. Made from high-strength alloy structural steel after heat treatment, mechanical performance, and joint thread conform to the requirements of the API.
| Type | O.D(in) | Connection | Length Series(m) |
| DZ60 | 2-3/8" | NC26 | 1, 1.5, 2, 2.5, 3 |
| DZ73 | 2-7/8" | NC31 | 1, 1.5, 2, 2.5, 3 |
| DZ89 | 3 -1/2" | NC31 | 1, 1.5, 2, 2.5, 3 |
| DZ102 | 4" | NC46 | 1, 1.5, 2, 2.5, 3 |
| DZ114 | 4 -1/2" | NC50 | 1, 1.5, 2, 2.5, 3 |
| DZ127 | 5" | NC50 | 1, 1.5, 2, 2.5, 3 |
| DZ140 | 5 -1/2" | 5 -1/2FH | 1, 1.5, 2, 2.5, 3 |