Oil pipes

Oil pipes are seamless, long steel products primarily used in oil drilling and oil and gas transportation. Their production accounts for over 40% of the total steel consumption in the petroleum industry. Core categories include well pipes (casing, tubing, drill pipe) conforming to standards such as API SPEC 5CT, as well as pipelines used for surface transportation.

Product Details

Product Type: API Tubing,EUE Seamless Tubing；NU Seamless Tubing；Premium Tubing
Outer Diameter (OD):48.26mm-114.30mm
Wall Thickness(WT):3.18mm-16mm
Length:R1, R2, R3
Standard:API 5CT J55,N80-1,V80-Q;L80-1;L80-9Cr;L80-13Cr;C90;C95;P110,Q125
Materials: H40, J55, K55, N80, L80, C90,T95 and P110
Thread type:NUE.EUE,BAM,Special clearance,VAN TOP,NEW VAM
Application:Oil Tubing is widely used for transporting crude oil and natural
gas to surface after drilling, which also bears pressure from exploration.
Production technology:Plain pipe-end upsetting- Austenite treatment-Quenching-Tempering-
straightening-(Non-Destructive Testing)- Threading-Thread inspection-coupling
MPI-phosphating-Coupling make up-Drifting-Hydrostatic testing-Measuring&Weight-
Marking&Stenciling-Coating-Packing Casing and tubing-Transportation
API 5CT Oil Tubing Dimension:
LabelOD (mm)WT (mm)Type of End-finish
InchNU T&CEU T&CIJH40J55L80N80C90T95P110
1.92.752.92.7648.263.68PNUIPNUIPNUIPNUIPNUIPNUI-
1.93.653.73-48.265.08PUPUPUPUPUPUPU
1.94.42--48.266.35--P-PP-
2 3/84--60.324.24PUPNPNPNPNPN-
2 3/84.64.7-60.324.83PNUPNUPNUPNUPNUPNUPNU
2 3/85.85.95-60.326.45--PNUPNUPNUPNUPNU
2 3/86.6--60.327.49--P-PP-
2 3/87.357.45-60.328.53--PU-PUPU-
2 7/86.46.5-73.025.51PNUPNUPNUPNUPNUPNUPNU
2 7/87.87.9-73.027.01--PNUPNUPNUPNUPNU
2 7/88.68.7-73.027.82--PNUPNUPNUPNUPNU
2 7/89.359.45-73.028.64--PU-PUPU-
2 7/810.5--73.029.96--P-PP-
3 1/27.7--88.95.49PNPNPNPNPNPN-
3 1/29.29.3-88.96.45PNUPNUPNUPNUPNUPNUPNU
3 1/210.2--88.97.34PNPNPNPNPNPN-
3 1/212.712.95-88.99.52--PNUPNUPNUPNUPNU
3 1/214.3--88.910.92--P-PP-
3 1/215.5--88.912.09--P-PP-
49.5--101.65.74PNPNPNPNPNPN-
410.711-101.66.65PUPUPUPUPUPU-
413.2--101.68.38--P-PP-
416.1--101.610.54--P-PP-
4 1/212.612.75-114.36.88PNUPNUPNUPNUPNUPNU-
4 1/215.2--114.38.56--P-PP-
P-Plain end; N-Non Upset;U-External upset;T&C-Threaded and coupled
Chemical Composition & Mechanical Properties
Mechanical Properties:
GradeTypeTotal elongation under load (%)Yield strength (min)Yield strength (max)Tensile strength min MpaHardness Max (HRC)Hardness Max (HBW)
J55-0.5379552517--
K55-0.5379552655--
N8010.5552758689--
N80Q0.5552758689--
L8010.555265565523241
L809Cr0.555265565523241
L8013Cr0.555265565523241
C90-0.562172468925.4255
C95-0.5655758724--
T95-0.565575872425.4255
P110-0.6758965862--
Q125All0.658621034931--
SizesODWeightwtType of end
12DNU kg/mEU kg/mIJt
NUEUIJmmkg/mmm



H40J55L80N80C90T95P110
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49.5––101.614.14––5.74PNPNPNPNPNPN–
410.711–101.6–16.37–6.65PUPUPUPUPUPU–
413.2––101.619.64––8.38––P–PP–
416.1––101.623.96––10.54––P–PP–
418.9––101.628.13––12.7––P–PP–
422.2––101.633.04––15.49––P–PP–
2004/1/212.612.75–114.318.7518.97–6.88PNUPNUPNUPNUPNUPNU–
2004/1/215.2––114.322.62––8.56––P–PP–
2004/1/217––114.325.3––9.65––P–PP–
2004/1/218.9––114.328.13––10.92––P–PP–
2004/1/221.5––114.332––12.7––P–PP–
2004/1/223.7––114.335.27––14.22––P–PP–
2004/1/226.1––114.338.84––16––P–PP–
P——Plain end;N—Non-upset threaded and coupled;U—External upset threaded and coupled;I—insert joint.


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