Oil Tubing

Category:

Description

API 5CT oil tubing
1) API Spec 5CT.
2) J55, K55, N80, L80, P110
3) NUE&EUE
4) ISO 9001 quality system ` `

API Tubing and its coupling made and checked in the company are in full accordance with API Spec 5CT.In the mean time, the product was authorized to use API Spec 5 CT monogram.

The kinds of the tubing made in the company are as follows: 2 3/8in, 2 7/8in and 3 1/2in NU and EU tubing of J55, K55,N80 ,L80 and P110 steel grade. After upsetting, the tubing endures full-length heat treatments. The heat treatment procedure is controlled by computers. Tubing production capacity is 100,000 ton per year and the upsetting and heat treatment capacity is30,000 ton per year.

With a perfect management system for tubing quality, the company got ISO9001 quality system certificate from Classification Society of China and got ISO9001 quality system certificate from API.Tubing and its coupling is one of main products to be covered with the quality system. In the mean time, the product was also authorized to use API Spec 5 CT monogram. The product is stable and reliable in quality, characteristic data are in accordance with the requirement of API Spec 5 CT specification for Casing and Tubing and API Std.5B Specification for Machining, Measurement.

Technical specitications

Steel grade Min. Yield Strength

(MPa)

Max.

Yield Strength

(MPa)

Min.Tensile Strength

(MPa)

Size (in) Connect Strength

(N)

OptimumMakeup Torque(N.m) Min.

Makeup Torque (N.m)

Max.

Makeup Torque

(N.m)

J55 379 552 517 2-3/8 NU 220235 990 740 1240
EUE 319008 1750 1310 2190
2-7/8 NU 323012 1420 1070 1780
EUE 443585 2230 1670 2790
3-1/2 NU 486742 2010 1500 2510
EUE 634011 3090 2320 3860
N80 552 758 689 2-3/8 NU 319897 1380 1040 1730
EUE 464052 2450 1830 3060
2-7/8 NU 469836 1990 1490 2490
EUE 645134 3210 2340 3900
3-1/2 NU 707868 2810 2110 3510
EUE 921874 4330 3250 5420
P110 758 965 862 2-3/8 NU 440470 1740 1300 2170
EUE 638016 3080 2310 3850
2-7/8 NU 646024 2510 1880 3140
EUE 887170 3940 2960 4930
3-1/2 NU 973484 3550 2670 4440
EUE 1268022 5490 4120 6860