C110 API 5CT Casing

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Description

 API 5CT C110 casing Tubing specification

C110 API casing or tubing is a relatively common one in Oil drilling. Because of the low steel grade of C110, it is used for shallow oil and gas extraction. Due to its low price among other grades of steel, it enjoys broader applications. C110 API casing or tubing is widely used in the extraction of natural gas and coalbed methane, and can be commonly found in shallow wells, geothermal wells, and water wells.

API 5CT C110 Casing Tubing Type of Casing:

  • short round thread casing(SC)
  • long round thread casing(LC)
  • buttress thread casing(BC)

API 5CT C110 Casing Tubing Mechanical Properties:

Tensile and Hardness Requirements
Grade     Yield Strength MPa Tensile Strength Hardness a,c Specified Wall thickness Allowable Hardness Variation b
Type Total Elongation Under Load min MPa max
min max HRC HBW mm HRC
1 2 3 4 5 6 7 8 9 10
H40 0.5 276 552 414
J55 0.5 379 552 517
K55 0.5 379 552 655
N80 1 0.5 552 758 689
N80 Q 0.5 552 758 689
R95 0.5 655 758 724
L80 L80 1 0.5 552 655 655 23 241
L80 9Cr 13Cr 0.5 552 655 655 23 241
0.5 552 655 655 23 241
C90 1 0.5 621 724 689 25.4 255 £12.70 3
12.71 to 19.04 4
19.05 to 25.39 5
³ 25.40 6
T95 1 0.5 655 758 724 25.4 255 £12.70 3
12.71 to 19.04 4
19.05 to 25.39 5
³ 25.40 6
C110 0.7 758 828 793 30 286 £12.70 3
12.71 to 19.04 4
19.05 to 25.39 5
³ 25.40 6
P110 0.6 758 965 862
Q125 1 0.65 862 1034 931 b £12.70 3
12.71 to 19.04 19.05 4
5
a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method.
b No hardness limits are specified, but the maximum variation is restricted as a manufacturing control in accordance with 7.8 and 7.9.
c For through-wall hardness tests of Grades L80 (all types), C90, T95 and C110, the requirements stated in HRC scale are for maximum mean hardness number.