DRILL STEM SWIVEL SUB
A class with identifier
http://staging4.data.posccaesar.org/iso/15926-4/rdl/RDS7155673
| Definition | A <DRILL STEM SWIVEL SUB> is a <DRILL STEM SUB> that has two pin ends and is used between the drilling swivel and the upper kelly valve. |
| ISO number | 4977 |
| Note | Note: Has left-hand threads! |
| RDS number | RDS7155673 |
| Source | Piping |