API J55 API K55 Welded Pipe
ASTM steel pipe can be classified into different steel grades according to the strength of the steel itself casing, i.e., J55, K55, N80, L80, C90, T95, P110, Q125, V150, etc. The steel grade of casing is different from that of the steel itself. Well conditions, well depth is different, the use of different steel grades. In the corrosive environment also requires the casing itself has corrosion resistance.API seamless steel pipe in the geological conditions of complex places also requires casing has anti-extrusion destruction performance. Suction pipe mainly transports oil and gas from the bottom of the well to the ground.
| Standard: API 5CT | Alloy Or Not: Not |
| Grade Group: J55,K55,N80,L80,P110, Etc | Application: Oiled&Casing Pipe |
| Thickness: 1 – 100 Mm | Surface Treatment: As Customer's Requirement |
| Outer Diameter(Round): 10 – 1000 Mm | Technique:Hot Rolled |
| Length: R1,R2,R3 | Heat Treatment: Quenching &Normalizing |
| Section Shape: Round | Special Pipe: Short Joint |
| Place Of Origin: China | Usage: Oiled And Gas |
| Certification: ISO9001:2008 | Test: NDT |
API 5CT J55 K55 Casing Tubing Tensile & Hardness Requirement
| 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 HRC | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 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 19.04 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. b No hardness limits are specified, but the maximum variation is restricted in accordance with 7.8 and 7.9 of API Spec. 5CT. |
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GNEE API Casting Pipe
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