| After-sales Service: | Support |
|---|---|
| Warranty: | Support |
| Type: | EXW |
| Technique: | Hot Rolled |
| Material: | Carbon Steel |
| Surface Treatment: | Varnishing |
| Samples: |
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Audited Supplier The special oil pipe is mainly used for drilling oil and gas Wells and conveying oil and gas. Oil casing is mainly used to support the well wall during drilling and after completion to ensure the drilling process and the normal operation of the entire well after completion. The oil casing is the lifeblood of the oil well. Due to different geological conditions, the downhole stress state is complex, and the combined action of tensile, compressive, bending and torsional stress acts on the pipe body, which puts forward higher requirements for the quality of the casing itself. If the casing itself is damaged for some reason, it can lead to the loss of production or even the abandonment of the entire well.
1. Specification range: Outer diameter: 114.3MM-508MM (4 1/2"--20") Wall thickness: 5.21MM-16.13MM(9.5PPF--133PPF)
2. Material: H40, J55, K55, N80-1, N80-Q, L80-1,L80-9Cr, L80-13Cr, P110, Q125 etc
3. Implementation standards: API 5CT, GB, ISO11960, GOST
4. Buckle type categories: STC, LTC, BTC, XC and Premium connection
5. Length: R1, R2, R3
6. Detection: NDT etc related rules of API 5CT and 5B
7. Type: seamless steel pipe, straight seam steel pipe
Chemical compositions of casing pipe
| Standard | Grade | Chemical compositions(%) | |||||||||
| API SPEC 5CT | J55 | C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V |
| K55 | 0.34~0.39 | 0.20~0.35 | 1.25~1.50 | ≤0.020 | ≤0.015 | ≤0.15 | ≤0.20 | ≤0.20 | / | / | |
| N80 | 0.34~0.38 | 0.20~0.35 | 1.45~1.70 | ≤0.020 | ≤0.015 | ≤0.15 | / | / | / | 0.11~0.16 | |
| L80 | 0.15~0.22 | ≤1.00 | 0.25~1.00 | ≤0.020 | ≤0.010 | 12.0~14.0 | ≤0.20 | ≤0.20 | / | / | |
| P110 | 0.26~0.395 | 0.17~0.37 | 0.40~0.70 | ≤0.020 | ≤0.010 | 0.80~1.10 | ≤0.20 | ≤0.20 | 0.15~0.25 | ≤0.08 | |
| Grade | Type | Total elongation under load (%) |
Yield strength (min)Mpa |
Yield strength (max)Mpa |
Tensile strength min Mpa |
Hardness Max (HRC) |
Hardness Max (HBW) |
| 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 | - | - |
| 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 | - | 0.5 | 621 | 724 | 689 | 25.4 | 255 |
| C95 | - | 0.5 | 655 | 758 | 724 | - | - |
| T95 | - | 0.5 | 655 | 758 | 724 | 25.4 | 255 |
| P110 | - | 0.6 | 758 | 965 | 862 | - | - |
| Q125 | All | 0.65 | 862 | 1034 | 931 | - | - |
Shipping--- by container (Apply to a few or common quantity) or in bulk ( Apply to huge quantity)
1. Q: Are you a factory or trading company?
A: We are professional manufacturer for steel pipe, and our company also is a very professional a trade company for steel products.we can also provide a wide range of steel products.
2. Q: Can I get samples before order ?
A: Samples can be provided free of charge, and the freight will be paid by the demander.
3. Q:what is your delivery time ?
A: Our delivery time is about one week, timing according to the number of customers.
4. Q:What is your payment terms?
A: Our usual payment methods are T/T, L/C,payment methods can be negotiated and customized with customers
5.Q:What do your factory do regarding quality control?
A: We have obtained ISO, CE and other certifications. From materials to products, we check every process to maintain good quality.
6. Q:How can you ensure what I got will be good ?
A: MADE in CHINA, will act as our guarantor. If the product fails the inspection before leaving the factory, you can refuse to accept the goods.
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Audited Supplier 
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