Oil tubing is divided into non upset tubing (NU), external upset tubing (EU) and integral joint tubing (IJ). NU tubing refers to the pipe end without thickening and directly threaded and with a collar. EU tubing means that after both ends are thickened externally, they are then threaded and put on a collar. The integral joint tubing refers to one end through the internal thickening of the external screw thread, the other end through the external thickening of the internal screw thread, and is directly connected without a collar

Outer diameter: 42.13mm-114.3mm (1.66 "-4 1/2")

Wall thickness: 3.56mm-16mm (2.3ppf-26.1ppf)

Thread type: NUE, EUE, IJ