Oil/petroleum and gas casing tube used in oilfield well drilling
Negotiable /Metric Ton
Min.Order:10 Metric Tons
Shaanxi Senwell Import & Export Co., Ltd.
Standard: API SPEC 5CT Standard.
Usage: Seamless steel tubes for oil casing and tubing in oil and gas well. Tubing is mounted in the production casing after the oil well is dig and cemented, it is seamless pipe to transport oil gas to ground surface.
Steel grade: J55, K55, N80, L80, C90, T95, P110, Q125
Size: 4 1/2"~20"
Length: R1/R2/R3
Dimensional tolerances:
Types of steel tubes | Outer diameter | Wall thickness | |
Cold-rolled tubes | Tube sizes(mm) | Tolerances(mm) | Tolerances(mm) |
<114.3 | ±0.79 | -12.5% | |
≥114.3 | -0.5%, +1% |
Mechanical properties:
Standard | Models of steel tubes | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) | Hardness |
API SPEC 5CT | J55 | ≥517 | 379~552 | check the table | ≤241HB |
K55 | ≥517 | ≥655 | |||
N80 | ≥689 | 552~758 | |||
L80(13Cr) | ≥655 | 552~655 | |||
P110 | ≥862 | 758~965 |
Chemical Composition:
Standard | Models of steel tubes | Chemical compositions (%) | ||||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V | Als | ||
API SPEC 5CT | J55K55 (37Mn5) | 0.34~ 0.39 | 0.2~ 0.35 | 1.25~ 1.5 | ≤0.02 | ≤0.015 | ≤0.15 | ≤0.20 | ≤0.20 |
|
| ≤0.02 |
N80 (36 Mn2V) | 0.34~ 0.38 | 0.2~ 0.35 | 1.45~ 1.7 | ≤0.02 | ≤0.015 | ≤0.15 |
|
|
| 0.11~ 0.16 | ≤0.02 | |
L80 (13Cr) | 0.15~ 0.22 | ≤1.0 | 0.25~ 1.0 | ≤0.02 | ≤0.010 | 12.0~ 14.0 | ≤0.20 | ≤0.20 |
|
| ≤0.02 | |
P110 (30CrMo) | 0.26~ 0.35 | 0.17~ 0.37 | 0.40~ 0.7 | ≤0.02 | ≤0.010 | 0.8~1.1 | ≤0.20 | ≤0.20 | 0.15~ 0.25 | ≤0.08 | ≤0.02 |
Note: Also we can supply you pup joint and coupling (coupling stock and coupling blank) for tubing and Casing, as well as for weld pipe.