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R1 R2 R3 Alloy Steel Material Hot Rolled Steel Casing Pipe
Description of oil casing:
1. Alloy steel seamless oil pipe
2. Size OD from 4 1/2”-20”
3. Length range R3
4. API thread type BTC LTC STC

| Product | Materials | Standards | Spec (mm) | Appilcation of oil casing pipes |
| Oil Casing Pipe | J55, K55,N80, L80 | API 5CT | 114.3-508.00*5.21-16.13 | Tube for conveying gas, water, and oil and natural gas industries etc. |
| C90, T95,P110 | ISO 11960 |
Features:
1. Alloy steel seamless pipe
2. Size OD 4 1/2”-20”
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 | - | - | - |