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Quality Petroleum Seamless Casing Pipe Alloy Steel Special Oil Use
Tube
Descriptions of oil casing:
Oil casing is a large-diameter pipe that serves as the structural
retainer for the walls of oil and gas
wells or wellbore.
It is inserted into the well bore and cemented in the well, protect
both subsurface formations and the
wellbore from collapsing, allow drilling fluid to circulate in it
and extraction to take place.
Features:
1. Alloy steel seamless pipe
2. Length range R3
Technical specification:
| Casing OD | 4 1/2" - 20" |
| W.T. | 5.21-22.22 mm |
| Kgs/m | 14.14-197.93 kg/m |
| Nominal weight | 9.5-133.0 Ib/ft |
| Technique | Hot rolled |
| Steel grade | J55, K55, M-65, N80, L80, C-95, N-80 Q , C-90, T-95, P-110 ect. |
| Standard | API SPEC 5CT, ISO11960 |
Mechanical Properties:
| Grade | Yield Strength | Tensile Strenght | Hardness | Allowable | |||||
| Min | Max | Min | Max | Max | Hardness | ||||
| Psi | Mpa | Psi | Mpa | Psi | Mpa | HRC | BHN | Variation | |
| J55 | 55,000 | 379 | 80,000 | 552 | 75,000 | 517 | - | - | - |
| K55 | 55,000 | 379 | 88,000 | 552 | 95,000 | 655 | - | - | - |
| N80 | 80,000 | 552 | 110,000 | 758 | 100,000 | 689 | - | - | - |
| N80-1 | 80,000 | 552 | 95,000 | 655 | 95,000 | 655 | 23 | 241 | - |
| C90 | 90,000 | 621 | 105,000 | 724 | 100,000 | 689 | 25.4 | 255 | 3 |
| C95 | 95,000 | 655 | 110,000 | 758 | 105,000 | 724 | - | - | - |
| T95 | 95,000 | 655 | 110,000 | 758 | 105,000 | 724 | 25.4 | 255 | 3 |
| P110 | 110,000 | 758 | 140,000 | 965 | 125,000 | 862 | - | - | - |
