Carbon Steel Oil Casing Pipe
The Carbon Steel Oil Casing Pipe is used to support the oil and gas well wall steel pipe, in order to ensure the drilling process and completion of the entire oil wells after the normal operation.
●Standard
API SPEC 5CT, ISO11960
Business type
Manufacture and agent
●Size
2 3/8"-20"* R-1 4.88～7.62m，R-2 7.62～10.36m, R-3 10.36m
Thread ends STC, LC, and BC.VAM etc.
●Application
Casing Tubing is used for extracting petroleum and natural gas from the well. Casing pipe serves as walls of the well.
●Standard
API SPEC 5CT, ISO11960
Business type
Manufacture and agent
●Size
2 3/8"-20"* R-1 4.88～7.62m，R-2 7.62～10.36m，R-3 10.36m
Thread ends STC, LC, and BC.VAM etc.
●Application
Casing Tubing is used for extracting petroleum and natural gas from the well. Casing pipe serves as walls of the well.
●Size Tolerances
Standard | OD Tolerance | WT Tolerance | ||
API 5CT | D≤101.6mm | ±0.79mm | －12.5% | |
D≥114.3mm | ＋1%－0.5% | －12.5% | ||
●Mechanical properties
Standard | Steel | Tensile Strength(MPa) | Yield strength(MPa) | Elongation (%) | |
Min | Max | ||||
API 5CT | J55 | 517 | 379 | 552 | As per table |
K55 | 655 | 379 | 552 | As per table | |
N80 | 689 | 552 | 758 | As per table | |
L80 | 655 | 552 | 655 | As per table | |
P110 | 862 | 758 | 965 | As per table | |
●Chemical composition: (%):
Standard | Steel | C | Si | Mn | P≤ | S≤ | Cu≤ | Ni≤ | Cr≤ | Mo≤ | V≤ |
API 5CT | J55 | 0.34-0.39 | 0.20-0.35 | 1.25-1.50 | 0.020 | 0.015 | 0.20 | 0.20 | 0.15 | / | / |
K55 | 0.34-0.39 | 0.20-0.35 | 1.25-1.50 | 0.020 | 0.015 | 0.20 | 0.20 | 0.15 | / | / | |
N80 | 0.34-0.38 | 0.20-0.35 | 1.45-1.70 | 0.020 | 0.015 | 0.20 | 0.20 | 0.15 | / | 0.11-0.16 | |
L80 | 0.15-0.22 | 1.00 | 0.25-1.00 | 0.020 | 0.010 | 0.20 | 0.20 | 12-14 | / | / | |
P110 | 0.26-0.35 | 0.17-0.37 | 0.40-0.70 | 0.020 | 0.010 | 0.20 | 0.20 | 0.8-1.1 | 0.15-0.25 | 0.08 |