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Casing
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Casing

American Petroleum Institute Standard (API SPEC 5CT)
Application Areas:
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National Service Hotline:+86-0510-86160120
Retail price
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Market price
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Number of views:
1000
Product serial number
Specification Range:
∮114-508×4-30mm
Use:
Used for oil drilling and mining.
Main Material:

API 5CT（J55、K55、N80、L80、C90、C95、T95、P110、Q125）

Quantity
-
+
Stock:
0
Product description
Parameters

● Standard

American Petroleum Institute Standard (API SPEC 5CT)

● Uses

Tubing is used to extract oil or gas from oil wells

Casing is used in the well wall of oil and gas wells

● Deviation

Allowable deviation of outer diameter, wall thickness and weight

Item   Tolerances
Outside Diameter Pipe Body D ≤ 101.6mm ± 0.79mm
D ≥ 114.3mm
(-0.5 %D~+1.0%D)
Coupling ± 1%D
Wall Thickness － 12.5%
Weight Single Lengths +6.5%~－3.5%
 Carload Lots≥18144kg － 1.75%
－ 3.5%

● Size

Size of Casing

Size
Desination		 Weight
Desination		 Outside Diameter Wall Thickness Type of End Finish
Grade
in mm in mm J55
K55		 M65 L80
C95		 N80-1
N80Q		 C90T95 P110
4 1/2 9.50 4.500 114.3 0.205 5.21 PS PS - - - -
10.50 0.224 5.69 PSB PSB - - - -
11.60 0.250 6.35 PSLB PLB PLB PLB PLB PLB
13.50 0.290 7.37 - PLB PLB PLB PLB PLB
15.10 0.337 8.56 - - - - - PLB
5 11.50 5.00 127.00 0.220 5.59 PS PS - - - -
13.00 0.253 6.43 PSLB PSLB - - - -
15.00 0.296 7.52 PSLB PLB PLB PLB PLB PLB
18.00 0.362 9.19 - PLB PLB PLB PLB PLB
21.40. 0.437 11.10 - PLB PLB PLB PLB PLB
23.20 0.478 12.14 - -  PLB  PLB  PLB PLB 
24.10 0.500 12.70 - -  PLB  PLB  PLB  PLB
5 1/2 14.00 5.500 139.7 0.244 6.20 PS PS - - - -
15.50 0.275 6.98 PSLB PSLB - - - -
17.00 0.304 7.72 PSLB PLB PLB PLB PLB PLB
20.00 0.361 9.17 - PLB PLB PLB PLB PLB
23.00 0.415 10.54 - PLB PLB PLB PLB PLB
6 5/8 20.00 6.625 168.28 0.288 7.32 PSLB PSLB - - - -
24.00 0.352 8.94 PSLB PLB PLB PLB PLB PLB

 

Size
Desination		 Weight
Desination		 Outside Diameter Wall Thickness Type of End Finish
Grade
in mm in mm J55
K55		 M65 L80
C95		 N80-1
N80Q		 C90T95 P110
6 5/8 28.00 6.625 168.28 0.417 10.59 - PLB PLB PLB PLB PLB
32.00 0.475 12.06 - - PLB PLB PLB PLB
7 17.00 7.00 177.80 0.231 5.87 - - - - - -
20.00 0.272 6.91 PS PS - - - -
23.00 0.317 8.05 PSLB PLB PLB PLB PLB -
26.00 0.362 9.19 PSLB PLB PLB PLB PLB PLB
29.00 0.408 10.36 - PLB PLB PLB PLB PLB
32.00 0.453 11.51 - PLB PLB PLB PLB PLB
35.00 0.498 12.65 - - PLB PLB PLB PLB
38.00 0.540 13.72 - - PLB PLB PLB PLB
7 5/8 24.00 7.625 193.68 0.300 7.62 - - - - - -
26.40 0.328 8.33 PSLB PSLB PLB PLB PLB PLB
29.70 0.375 9.52 - PLB PLB PLB PLB PLB
33.70 0.430 10.92 - PLB PLB PLB PLB PLB
39.00 0.500 12.70 - - PLB PLB PLB PLB
42.80 0.562 14.27 - - PLB PLB PLB PLB
45.30 0.595 15.11 - - PLB PLB PLB PLB
47.10 0.625 15.88 - - PLB PLB PLB PLB
8 5/8 24.00 8.625 219.08 0.264 6.71 PS PS - - - -
28.00 0.304 7.72 - PS - - - -
32.00 0.352 8.94 PSLB PSLB - - - -
36.00 0.400 10.16 PSLB PSLB PLB PLB PLB PLB
40.00 0.450 11.43 - PLB PLB PLB PLB PLB
44.00 0.500 12.70 - - PLB PLB PLB PLB
49.00 0.557 14.15 - - PLB PLB PLB PLB
9 5/8 32.30 9.625 244.48 0.312 7.92 - - - - - -
36.00 0.352 8.94 PSLB PSLB - - - -
40.00 0.395 10.03 PSLB PSLB PLB PLB PLB -
43.50 0.435 11.05 - PLB PLB PLB PLB PLB
47.00 0.472 11.99 - PLB PLB PLB PLB PLB
53.50 0.545 13.84 - - PLB PLB PLB PLB
58.40 0.595 15.11 - - PLB PLB PLB PLB
10 3/4 32.75 10.75 273.05 0.279 7.09 - - - - - -
40.50 0.350 8.89 PSB PSB - - - -
15.50 0.400 10.16 PSB PSB - - - -
51.00 0.450 11.43 PSB PSB PSB PSB PSB PSB
55.50 0.495 12.57 - PSB PSB PSB PSB PSB

 

Size
Desination		 Weight
Desination		 Outside Diameter Wall Thickness Type of End Finish
Grade
in mm in mm J55
K55		 M65 L80
C95		 N801Q C90T95 P110
10 3/4 60.70 10.75 273.05 0.545 13.84 - - - - PSB PSB
65.70 0.595 15.11 - - - - PSB PSB
11 3/4 42.00 11.75 298.45 0.333 8.46 - - - - - -
47.00 0.375 9.53 PSB PSB - - - -
54.00 0.435 11.05 PSB PSB - - - -
60.00 0.489 12.42 PSB PSB PSB PSB PSB PSB
13 3/8 48.00 13.375 339.73 0.330 8.38 - - - - - -
54.50 0.380 9.65 PSB PSB - - - -
61.00 0.430 10.92 PSB PSB - - - -
68.00 0.480 12.19 PSB PSB PSB PSB PSB PSB
72.00 0.514 13.06 - - PSB PSB PSB PSB

Note: P-plain end S-short round thread L-Long round thread B-Buttress thread

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