API 5CT N80 Oilfield Casing Pipe
API 5CT N80 Casing Pipe is manufactured with high-quality raw materials from reliable and trustworthy suppliers in the industry. These products undergo various heat treatments and testing procedures, such as impact tests, water pressure tests, tensile tests, and non-destructive electrical tests to verify that they meet the specified characteristics.
API 5CT N80 oil well casing has higher mechanical properties than J55 and K55 types, so it is likely to be used in some more challenging formations. It has a deeper downhole depth than J55 and K55 types and can be used for medium-level oil and gas production.
API 5CT N80 high-pressure steel pipe has the advantage of high capability and can be used in various oil well environments, including high-pressure and high-temperature oil wells. In addition, API 5CT N80 cold-drawn casing is very suitable for use in horizontal wells and is also commonly used in offshore drilling operations.
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API 5CT N80 Natural gas pipe chemical composition
| Group | Grade | Type | C | Mn | Mo | Cr | Ni max. | Cu max. | P max. | S max. | Si max. | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min. | max. | min. | max. | min. | max. | min. | max. | ||||||||
| 1 | N80 | 1 | – | – | – | – | – | – | – | – | – | – | 0.03 | 0.03 | – |
| 2 | N80 | Q | – | – | – | – | – | – | – | – | – | – | 0.03 | 0.03 | – |
API 5CT N80 Drilling casing Mechanical analysis
| Standard | Type | Tensile Strength MPa | Yield Strength MPa | Hardness Max. |
|---|---|---|---|---|
| API SPEC 5CT | 1/Q | ≥689 | 552 ~ 758 | - |
API 5CT N80 oil casing pipe

Why choose us
gnee has 14 steel production lines, 10 processing equipment for processing, bending, painting, heat treatment, cutting, drilling, beveling, tempering, surface treatment, complete testing equipment and strong technical force. The annual production capacity is more than 60,000 tons.
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FAQ
1.Q.What's your advantage?
A.Honest business with competitive price and professional service on export process.
2.Q.Can your products be customized?
A.Yes, we can produce and process according to your requirements.
3.Q. Do you have a quality control system?
A.Yes, we have our own quality control laboratory.
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