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API 5CT casing pipe is a critical component in oil well drilling and well completion operations, designed to maintain wellbore integrity, isolate formations and protect production zones. As an important category ofOil Country Tubular Goods, API 5CT casing pipe is widely used in onshore and offshore oilfield applications.
Manufactured to API 5CT specifications, our oilfield casing pipe is available in multiple sizes, weights, grades and premium thread connections, including J55, K55, N80, L80 and P110, meeting requirements for standard wells,sour service, and HPHT drilling environments.
With excellent mechanical strength, collapse resistance and corrosion performance, our API casing pipe is suitable for oil and gas drilling,well construction,production tubing strings, and demanding energy applications. We supply reliable casing and tubing solutions for drilling contractors, EPC projects and oilfield service companies worldwide.
Specification:
Material: H40, J55, K55, N80-1, N80-Q, M65, L80-1, C90-1, T95, P110, Q125, etc.
Outer diameter: 4-1/2" to 20".
WT: 5.21 mm to 16.13 mm (9.5 PPF to 133PPF)
Standard: API 5CT.
Thread connection: STC, LTC, BTC, XC and Premium connection
Length: R1, R2, R3
Popular Specifications of Sucker API Casing Pipe | ||||||||||||
Sizes | OD (mm) | Weight (kg/m) | WT (mm) | Type of End | ||||||||
H40 | J55/K55 | M65 | L80/C95 | N80-1/N80-Q | C90/T95 | P110 | Q125 | |||||
1 | 2 | |||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
4-1/2 | 9.5 | 114.3 | 14.14 | 5.21 | PS | PS | PS | – | – | – | – | – |
4-1/2 | 10.5 | 114.3 | 15.63 | 5.69 | – | PSB | PSB | – | – | – | – | – |
4-1/2 | 11.6 | 114.3 | 17.26 | 6.35 | – | PSLB | PLB | PLB | PLB | PLB | PLB | – |
4-1/2 | 13.5 | 114.3 | 20.09 | 7.37 | – | – | PLB | PLB | PLB | PLB | PLB | – |
4-1/2 | 15.1 | 114.3 | 22.47 | 8.56 | – | – | – | – | – | – | PLB | PLB |
5 | 11.5 | 127 | 17.11 | 5.59 | – | PS | PS | – | – | – | – | – |
5 | 13 | 127 | 19.35 | 6.43 | – | PSLB | PSLB | – | – | – | – | – |
5 | 15 | 127 | 22.32 | 7.52 | – | PSLBE | PLB | PLBE | PLBE | PLBE | PLBE | – |
5 | 18 | 127 | 26.79 | 9.19 | – | – | PLB | PLBE | PLBE | PLBE | PLBE | PLBE |
5 | 21.4 | 127 | 31.85 | 11.1 | – | – | PLB | PLB | PLB | PLB | PLB | PLB |
5 | 23.2 | 127 | 34.53 | 12.14 | – | – | – | PLB | PLB | PLB | PLB | PLB |
5 | 24.1 | 127 | 35.86 | 12.7 | – | – | – | PLB | PLB | PLB | PLB | PLB |
5-1/2 | 14 | 139.7 | 20.83 | 6.2 | PS | PS | PS | – | – | – | – | – |
5-1/2 | 15.5 | 139.7 | 23.07 | 6.98 | – | PSLBE | PSLB | – | – | – | – | – |
5-1/2 | 17 | 139.7 | 25.3 | 7.72 | – | PSLBE | PLB | PLBE | PLBE | PLBE | PLBE | – |
5-1/2 | 20 | 139.7 | 29.76 | 9.17 | – | – | PLB | PLBE | PLBE | PLBE | PLBE | – |
5-1/2 | 23 | 139.7 | 34.23 | 10.54 | – | – | PLB | PLBE | PLBE | PLBE | PLBE | PLBE |
5-1/2 | 26.8 | 139.7 | 39.88 | 12.7 | – | – | – | – | – | P | – | – |
5-1/2 | 29.7 | 139.7 | 44.2 | 14.27 | – | – | – | – | – | P | – | – |
5-1/2 | 32.6 | 139.7 | 48.51 | 15.88 | – | – | – | – | – | P | – | – |
5-1/2 | 35.3 | 139.7 | 52.53 | 17.45 | – | – | – | – | – | P | – | – |
5-1/2 | 38 | 139.7 | 56.55 | 19.05 | – | – | – | – | – | P | – | – |
5-1/2 | 40.5 | 139.7 | 60.27 | 20.62 | – | – | – | – | – | P | – | – |
5-1/2 | 43.1 | 139.7 | 64.14 | 22.22 | – | – | – | – | – | P | – | – |
6-5/8 | 20 | 168.28 | 29.76 | 7.32 | PS | PSLB | PSLB | – | – | – | – | – |
6-5/8 | 24 | 168.28 | 35.72 | 8.94 | – | PSLBE | PLB | PLBE | PLBE | PLBE | PLBE | – |
6-5/8 | 28 | 168.28 | 41.67 | 10.59 | – | – | PLB | PLBE | PLBE | PLBE | PLBE | – |
6-5/8 | 32 | 168.28 | 47.62 | 12.06 | – | – | – | PLBE | PLBE | PLBE | PLBE | PLBE |
7 | 17 | 177.8 | 25.3 | 5.87 | PS | – | – | – | – | – | – | – |
7 | 20 | 177.8 | 29.76 | 6.91 | PS | PS | PS | – | – | – | – | – |
7 | 23 | 177.8 | 34.23 | 8.05 | – | PSLBE | PLB | PLBE | PLBE | PLBE | – | – |
7 | 26 | 177.8 | 38.69 | 9.19 | – | PSLBE | PLB | PLBE | PLBE | PLBE | PLBE | – |
7 | 29 | 177.8 | 43.16 | 10.36 | – | – | PLB | PLBE | PLBE | PLBE | PLBE | – |
7 | 32 | 177.8 | 47.62 | 11.51 | – | – | PLB | PLBE | PLBE | PLBE | PLBE | – |
7 | 35 | 177.8 | 52.09 | 12.65 | – | – | – | PLBE | PLBE | PLBE | PLBE | PLBE |
7 | 38 | 177.8 | 56.55 | 13.72 | – | – | – | PLBE | PLBE | PLBE | PLBE | PLBE |
7 | 42.7 | 177.8 | 63.54 | 15.88 | – | – | – | – | – | P | – | – |
7 | 46.4 | 177.8 | 69.05 | 17.45 | – | – | – | – | – | P | – | – |
7 | 50.1 | 177.8 | 74.56 | 19.05 | – | – | – | – | – | P | – | – |
7 | 53.6 | 177.8 | 79.77 | 20.62 | – | – | – | – | – | P | – | – |
7 | 57.1 | 177.8 | 84.97 | 22.22 | – | – | – | – | – | P | – | – |
7-5/8 | 24 | 193.68 | 35.72 | 7.62 | PS | – | – | – | – | – | – | – |
7-5/8 | 26.4 | 193.68 | 39.29 | 8.33 | – | PSLBE | PSLB | PLBE | PLBE | PLBE | – | – |
7-5/8 | 29.7 | 193.68 | 44.2 | 9.52 | – | – | PLB | PLBE | PLBE | PLBE | PLBE | – |
7-5/8 | 33.7 | 193.68 | 50.15 | 10.92 | – | – | PLB | PLBE | PLBE | PLBE | PLBE | – |
7-5/8 | 39 | 193.68 | 58.04 | 12.7 | – | – | – | PLBE | PLBE | PLBE | PLBE | PLBE |
7-5/8 | 42.8 | 193.68 | 63.69 | 14.27 | – | – | – | PLB | PLB | PLB | PLB | PLB |
7-5/8 | 45.3 | 193.68 | 67.41 | 15.11 | – | – | – | PLB | PLB | PLB | PLB | PLB |
7-5/8 | 47.1 | 193.68 | 70.09 | 15.88 | – | – | – | PLB | PLB | PLB | PLB | PLB |
7-5/8 | 51.2 | 193.68 | 76.19 | 17.45 | – | – | – | – | – | P | – | – |
7-5/8 | 55.3 | 193.68 | 82.3 | 19.05 | – | – | – | – | – | P | – | – |
7-3/4 | 46.1 | 196.85 | 68.6 | 15.11 | – | – | – | P | P | P | P | P |
8-5/8 | 24 | 219.08 | 35.72 | 6.71 | – | PS | PS | – | – | – | – | – |
8-5/8 | 28 | 219.08 | 41.67 | 7.72 | PS | – | PS | – | – | – | – | – |
8-5/8 | 32 | 219.08 | 47.62 | 8.94 | PS | PSLBE | PSLB | – | – | – | – | – |
8-5/8 | 36 | 219.08 | 53.57 | 10.16 | – | PSLBE | PSLB | PLBE | PLBE | PLBE | – | – |
8-5/8 | 40 | 219.08 | 59.53 | 11.43 | – | – | PLB | PLBE | PLBE | PLBE | PLBE | – |
8-5/8 | 44 | 219.08 | 65.48 | 12.7 | – | – | – | PLBE | PLBE | PLBE | PLBE | PLBE |
8-5/8 | 49 | 219.08 | 72.92 | 14.15 | – | – | – | PLBE | PLBE | PLBE | PLBE | |
9-5/8 | 32.3 | 244.48 | 48.07 | 7.92 | PS | – | – | – | – | – | – | – |
9-5/8 | 36 | 244.48 | 53.57 | 8.94 | PS | PSLB | PSLB | – | – | – | – | – |
9-5/8 | 40 | 244.48 | 59.53 | 10.03 | – | PSLBE | PSLB | PLBE | PLBE | PLBE | – | – |
9-5/8 | 43.5 | 244.48 | 64.73 | 11.05 | – | – | PLB | PLBE | PLBE | PLBE | PLBE | – |
9-5/8 | 47 | 244.48 | 69.94 | 11.99 | – | – | PLB | PLBE | PLBE | PLBE | PLBE | PLBE |
9-5/8 | 53.5 | 244.48 | 79.62 | 13.84 | – | – | – | PLBE | PLBE | PLBE | PLBE | PLBE |
9-5/8 | 58.4 | 244.48 | 86.91 | 15.11 | – | – | – | PLB | PLB | PLB | PLB | PLB |
9-5/8 | 59.4 | 244.48 | 88.4 | 15.47 | – | – | – | – | – | P | – | – |
9-5/8 | 64.9 | 244.48 | 96.58 | 17.07 | – | – | – | – | – | P | – | – |
9-5/8 | 70.3 | 244.48 | 104.62 | 18.64 | – | – | – | – | – | P | – | – |
9-5/8 | 75.6 | 244.48 | 112.5 | 20.24 | – | – | – | – | – | P | – | – |
10-3/4 | 32.75 | 273.05 | 48.74 | 7.09 | PS | – | – | – | – | – | – | – |
10-3/4 | 40.5 | 273.05 | 60.27 | 8.89 | PS | PSB | PSB | – | – | – | – | – |
10-3/4 | 45.5 | 273.05 | 67.71 | 10.16 | – | PSBE | PSB | – | – | – | – | – |
10-3/4 | 51 | 273.05 | 75.9 | 11.43 | – | PSBE | PSB | PSBE | PSBE | PSBE | PSBE | – |
10-3/4 | 55.5 | 273.05 | 82.59 | 12.57 | – | – | PSB | PSBE | PSBE | PSBE | PSBE | – |
10-3/4 | 60.7 | 273.05 | 90.33 | 13.84 | – | – | – | – | – | PSBE | PSBE | PSBE |
10-3/4 | 65.7 | 273.05 | 97.77 | 15.11 | – | – | – | – | – | PSB | PSB | PSB |
10-3/4 | 73.2 | 273.05 | 108.93 | 17.07 | – | – | – | – | – | P | – | – |
10-3/4 | 79.2 | 273.05 | 117.86 | 18.64 | – | – | – | – | – | P | – | – |
10-3/4 | 85.3 | 273.05 | 126.94 | 20.24 | – | – | – | – | – | P | – | – |
11-3/4 | 42 | 298.45 | 62.5 | 8.46 | PS | – | – | – | – | – | – | – |
11-3/4 | 47 | 298.45 | 69.94 | 9.53 | – | PSB | PSB | – | – | – | – | – |
11-3/4 | 54 | 298.45 | 80.36 | 11.05 | – | PSB | PSB | – | – | – | – | – |
11-3/4 | 60 | 298.45 | 89.29 | 12.42 | – | PSB | PSB | PSB | PSB | PSB | PSB | PSB |
11-3/4 | 65 | 298.45 | 96.73 | 13.56 | – | – | – | P | P | P | P | P |
11-3/4 | 71 | 298.45 | 105.66 | 14.78 | – | – | – | P | P | P | P | P |
13-3/8 | 48 | 339.72 | 71.43 | 8.38 | PS | – | – | – | – | – | – | – |
13-3/8 | 54.5 | 339.72 | 81.1 | 9.65 | – | PSB | PSB | – | – | – | – | – |
13-3/8 | 61 | 339.72 | 90.78 | 10.92 | – | PSB | PSB | – | – | – | – | – |
13-3/8 | 68 | 339.72 | 101.19 | 12.19 | – | PSB | PSB | PSB | PSB | PSB | PSB | – |
13-3/8 | 72 | 339.72 | 107.15 | 13.06 | – | – | – | PSB | PSB | PSB | PSB | PSB |
16 | 65 | 406.4 | 96.73 | 9.53 | PS | – | – | – | – | – | – | – |
16 | 75 | 406.4 | 111.61 | 11.13 | – | PSB | PSB | – | – | – | – | – |
16 | 84 | 406.4 | 125.01 | 12.57 | – | PSB | PSB | – | – | – | – | – |
16 | 109 | 406.4 | 162.21 | 16.66 | – | P | – | P | P | – | P | P |
18-5/8 | 87.5 | 473.08 | 130.21 | 11.05 | PS | PSB | PSB | – | – | – | – | – |
20 | 94 | 508 | 139.89 | 11.13 | PSL | PSLB | PSLB | – | – | – | – | – |
20 | 106.5 | 508 | 158.49 | 12.7 | – | PSLB | PSLB | – | – | – | – | – |
20 | 133 | 508 | 197.93 | 16.13 | – | PSLB | – | – | – | – | – | – |
API 5CT Casing Pipe Physical Strength
Group | Grade | Type | Total elongation under load % | Yield strength MPa | Tensile strength min. MPa | Hardness a max. | Specified wall thickness mm | Allowable hardness variation b RHC | ||
min | max | HRC | HBW | |||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
1 | 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 | – | – | – | – | |
2 | M65 | – | 0.5 | 448 | 586 | 586 | 22 | 235 | – | – |
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 | 1 | 0.5 | 621 | 724 | 689 | 25.4 | 255 | ≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40 | 3.0 4.0 5.0 6.0 | |
T95 | 1 | 0.5 | 655 | 758 | 724 | 25.4 | 255 | ≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40 | 3.0 4.0 5.0 6.0 | |
C110 | – | 0.7 | 758 | 828 | 793 | 30 | 286 | ≤ 12.70 12.71 to 19.0 19.05 to 25.39 ≥ 25.40 | 3.0 4.0 5.0 6.0 | |
3 | P110 | – | 0.6 | 758 | 965 | 862 | – | – | – | – |
4 | Q125 | 1 | 0.65 | 862 | 1034 | 931 | b | – | ≤ 12.70 12.71 to 19.04 ≥ 19.05 | 3.0 4.0 5.0 |
a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method. | ||||||||||
