Tubing

TubingFEATURES

  • Comply with Specifications on Casing and Tubing (API Spec 5CT).
  • Specifications on Processing, Measuring and Inspecting Casing, Tubing and Threads (API Spec 5B) and other related standards, and have acquired the authorization to use Official API Monogram.
  • The company produces API-compliant tubing of various specifications non-thickened or thickened from the outside with Grade J, N, C, L, T or P steel.
  • Advanced online fault detection, hardening, tempering, automatic heating and extrusion forming techniques are incorporated so that mechanical strength and overall performance are enhanced.
  • Threads are processed on special numeral control lathes avoiding any rotation of the rod so as to ensure high precision, reliable performance and extended service life.
  • Coupling is subject to fault detection with fluorescent magnetic particles. Phosphate treatment and copper plating are incorporated so as to provide satisfactory wear resistant and anti-adhesive threads.

Technical Specification

tubing Spec in Outer dia mm(in) Thickness of walls  mm(in) Steel grade Length mm(ft)
Not thickened Thickened from the outside
2 3/8 60.32(2.375) 65.89(2.594) 4.83(0.190) J55 N80 L80 C90 T95 P110 8530~9750(28~32)
2 7/8 73.02(2.875) 78.59(3.094) 5.51(0.217)
3 1/2 88.90(3.500) 95.25(3.750) 6.45(0.254)
Coupling Spec in Outer dia mm(in) Min. length mm(in) Steel grade Width of loading end mm(in) Mass kg(lbs)
Not thickened Thickened from the outside Not thickened Thickened from the outside Not thickened Thickened from the outside Not thickened Thickened from the outside
2 3/8 73.02(2.875) 77.80(3.063) 107.95(41/4) 123.82(47/8) J55 N80 L80 C90 T95 P110 4.76 (3/16) 3.97(5/32) 1.28(2.82) 1.55(3.43)
2 7/8 88.90(3.500) 93.17(3.668) 130.18(51/8) 133.35(51/4) 5.567(/32) 2.34(5.15) 2.40(5.29)
3 1/2 107.95(4.250) 114.30(4.500) 142.88(55/8) 146.05(53/4) 6.35 (1/4) 3.71(8.17) 4.10(9.03)