Technical Parameters of Casing Pipe
Sizes | OD D mm |
Weight kg/m |
WT t mm |
Type of End | ||||||||
 |  |  |  | H40 | J55 K55 |
M65 | L80 C95 |
N80 1ã€Q |
C90 T95 |
P110 | Q125 | |
1 | 2 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
4-1/2 4-1/2 4-1/2 4-1/2 4-1/2 |
9.50 10.50 11.60 13.50 15.10 |
114.30 114.30 114.30 114.30 114.30 |
14.14 15.63 17.26 20.09 22.47 |
5.21 5.69 6.35 7.37 8.56 |
PS – – – – |
PS PSB PSLB – – |
PS PSB PLB PLB – |
– – PLB PLB – |
– – PLB PLB – |
– – PLB PLB – |
– – PLB PLB PLB |
– – – – PLB |
5 5 5 5 5 5 5 |
11.50 13.00 15.00 18.00 21.40 23.20 24.10 |
127.00 127.00 127.00 127.00 127.00 127.00 127.00 |
17.11 19.35 22.32 26.79 31.85 34.53 35.86 |
5.59 6.43 7.52 9.19 11.10 12.14 12.70 |
– – – – – – – |
PS PSLB PSLBE – – – – |
PS PSLB PLB PLB PLB – – |
– – PLBE PLBE PLB PLB PLB |
– – PLBE PLBE PLB PLB PLB |
– – PLBE PLBE PLB PLB PLB |
– – PLBE PLBE PLB PLB PLB |
– – – PLBE PLB PLB PLB |
Below is a detailed technical specification table for casing pipes, covering various sizes, weights, wall thicknesses, and end types. This information helps in selecting the appropriate casing pipe based on specific application requirements.
The table provides comprehensive data including outer diameter (OD), weight per meter, wall thickness (WT), and different end types such as PS (Plain), PSLB (Short Long Thread), PLB (Long Thread), and more. Each size corresponds to specific mechanical properties and chemical compositions, ensuring compatibility with different operational environments.
These parameters are crucial for engineers and project managers to ensure the correct selection of casing pipes that meet the required performance standards, safety regulations, and cost-efficiency in oil and gas drilling operations.
For any special connection types not listed here, please consult our technical team to provide customized solutions tailored to your needs.
Chemical Composition of Casing Pipe
The chemical composition of casing pipes plays a vital role in determining their mechanical properties, corrosion resistance, and overall durability. The following table outlines the standard chemical compositions for API SPEC 5CT grades:
Chemical Compositions of Casing Pipe |
|||||||||||
Standard |
Grade |
Chemical Compositions (%) |
|||||||||
API SPEC 5CT |
J55 |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Mo |
V |
K55 |
0.34~0.39 |
0.20~0.35 |
1.25~1.50 |
≤0.020 |
≤0.015 |
≤0.15 |
≤0.20 |
≤0.20 |
/ |
/ |
|
N80 |
0.34~0.38 |
0.20~0.35 |
1.45~1.70 |
≤0.020 |
≤0.015 |
≤0.15 |
/ |
/ |
/ |
0.11~0.16 |
|
L80 |
0.15~0.22 |
≤1.00 |
0.25~1.00 |
≤0.020 |
≤0.010 |
12.0~14.0 |
≤0.20 |
≤0.20 |
/ |
/ |
|
P110 |
0.26~0.395 |
0.17~0.37 |
0.40~0.70 |
≤0.020 |
≤0.010 |
0.80~1.10 |
≤0.20 |
≤0.20 |
0.15~0.25 |
≤0.08 |
Mechanical Properties of Casing Pipe
Mechanical Properties of Casing Pipe |
|||||||
Grade |
Type |
Total Elongation |
Yield Strength |
Yield Strength |
Tensile Strength |
Hardness |
Hardness |
Under Load (%) |
(Min) MPa |
(Max) MPa |
Min MPa |
Max (HRC) |
Max (HBW) |
||
 |
 |
 |
 |
 |
 |
||
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 |
- |
- |
L80 |
1 |
0.5 |
552 |
655 |
655 |
23 |
241 |
L80 |
9Cr |
0.5 |
552 |
655 |
655 |
23 |
241 |
L80 |
13Cr |
0.5 |
552 |
655 |
655 |
23 |
241 |
C90 |
- |
0.5 |
621 |
724 |
689 |
25.4 |
255 |
C95 |
- |
0.5 |
655 |
758 |
724 |
- |
- |
T95 |
- |
0.5 |
655 |
758 |
724 |
25.4 |
255 |
P110 |
- |
0.6 |
758 |
965 |
862 |
- |
- |
Q125 |
All |
0.65 |
862 |
1034 |
931 |
- |
- |
These mechanical properties are essential for evaluating the strength, ductility, and wear resistance of casing pipes under various operating conditions. They help ensure the structural integrity and long-term performance of the pipes in demanding environments such as deep well drilling or high-pressure applications.
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