Casing

Size of Casing

Outside Diameter in(mm) Weight Designation Wall Thickness Type of end finish
Grade
in mm J55 L80-1 N80 P110
4 1/2"(114.3) 10.50 0.224 5.69 PSB
11.60 0.250 6.35 PSLB PLB PLB PLB
13.50 0.290 7.37 PLB PLB PLB
15.10 0.337 8.56 PLB
5"(127) 11.50 0.220 5.59 PS
13.00 0.253 6.43 PSLB
15.00 0.296 7.52 PSLB PLB PLB PLB
18.00 0.362 9.19 PLB PLB PLB
21.40 0.437 11.10 PLB PLB PLB
23.20 0.478 12.14 PLB PLB PLB
24.10 0.500 12.70 PLB PLB PLB
5 1/2"(139.7) 14.00 0.244 6.20 PS
15.50 0.275 6.99 PSLB
17.00 0.304 7.72 PSLB PLB PLB PLB
20.00 0.361 9.17 PLB PLB PLB
23.00 0.415 10.54 PLB PLB PLB
26.80 0.500 12.70
29.70 0.562 14.27
32.60 0.625 15.87
35.30 0.687 17.45
38.00 0.750 19.05
40.50 0.812 20.62
43.10 0.875 22.23
7"(177.8) 20.00 0.272 6.91 PS
23.00 0.317 8.05 PSLB
26.00 0.362 9.19 PSLB PLB PLB PLB
29.00 0.408 10.36 PLB PLB PLB
32.00 0.453 11.51 PLB PLB PLB
35.00 0.495 12.65 PLB PLB PLB
38.00 0.540 13.72 PLB PLB PLB
42.70 0.626 15.87
46.40 0.687 17.45
50.10 0.750 19.05
53.60 0.812 20.62
57.10 0.875 22.23
8 5/8"(219.1) 24.00 0.264 6.71 PS
28.00 0.304 7.72
32.00 0.352 8.94 PSLB
36.00 0.400 10.16 PSLB PLB PLB PLB
40.00 0.450 11.43 PLB PLB PLB
44.00 0.500 12.70 PLB PLB PLB
49.00 0.557 14.15 PLB PLB PLB
9 5/8"(244.5) 36.00 0.352 8.94 PSLB PLB
40.00 0.395 10.03 PSLB PLB PLB PLB
43.50 0.435 11.05 PLB PLB
47.00 0.472 11.99 PLB PLB
53.50 0.545 13.84 PLB PLB
58.40 0.595 15.11 PLB PLB
59.40 0.609 15.47
64.90 0.672 17.07
70.30 0.734 18.64
75.60 0.797 20.24
10 3/4"(273.1) 40.50 0.350 8.98 PSB
45.50 0.400 10.16 PSB
51.00 0.450 11.43 PSB PSB PSB PSB
55.50 0.495 12.70 PSB PSB PSB
60.70 0.545 13.84 PSB
65.70 0.595 15.11
73.20 0.672 17.07
79.20 0.734 18.64
85.30 0.797 20.24

Mechanical Properties

Grade Type Yield Yield Yield Hardness Total Elongation
Strength Strength Strength Under Loading
Mpa Ksi Mpa Ksi Max %
Min Max Min Max   HRC
J55  - 379 552 55 80 517 75  - 0.5
K55  - 379 552 55 80 655 95  - 0.5
N80 1 552 758 80 110 689 100  - 0.5
N80 Q 552 758 80 110 689 100  - 0.5
L80 1 552 655 80 95 655 95 23 0.5
P110  - 758 965 110 140 862 125  - 0.6

Chemical Composition

Grade Chemical Composition(%)
Mn Mo Cr Ni Cu P S Si
Min Max Min Max Min Max Min Max Max Max Max Max Max
J/K55 -- -- -- -- -- -- -- -- -- -- 0.030 0.030 --
N80 -- -- -- -- -- -- -- -- -- -- 0.030 0.030 --
L80-1 -- 0.43 -- 1.90 -- -- -- -- 0.25 0.35 0.030 0.030 0.45
P110 -- -- -- -- -- -- -- -- -- -- 0.030 0.030 --

Outside Diameter

Outside Diameter, Wall Thickness and Weight Tolerance

Item Tolerance
Outside Diameter D<114.3mm, ±0.79mm
D≥114.3mm, +1.0%
Wall Thickness 12.50%
Weight Single length  +6.5%, -3.5% 
Carloads -1.75%

Lengths

Range Range1 Range2 Range3
Casing 4.88-7.62m(16.0-25.0ft) 7.62-10.36m(25.0-34.0ft) 10.36-14.63m(34.0-48.0ft)