SAVER SUB PH6 PIN 2-7/8 X 3 1/2 IF BOX
Drill collar joint Saver sub Joint classification and size
Due to the different thickening forms of API drill pipe thickened end (the connection between drill pipe body and drill pipe joint), three types of joints (internal flat, through hole and normal) have been produced at the coarse thread end (and then digital type)
·The thickened end of API drill pipe is as follows:
Steel grade internal thickening (IU) external thickening (EU) internal and external thickening (IEU) and Premium Thread.
