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API 5CT N80 tubing coupling is a connector for N80-grade tubing used in oil and gas wells. N80 is a medium-strength steel grade defined by API 5CT, offering a minimum yield strength of 80,000 psi (551 MPa). It is heat-treated (quenched and tempered) for enhanced strength and toughness, making it suitable for medium to high-pressure wells.
N80 tubing couplings are manufactured to API 5CT standards, ensuring quality, reliability, and interchangeability. They are widely used in both onshore and offshore drilling operations, offering a balance of performance and cost. N80 is ideal for environments requiring higher strength than J55 but not as high as P110.
| Product: | API 5CT Tubing coupling, Tubing coupling, N80 Tubing coupling |
| Application: | Used for connect 2 joints of tubing or casing |
| tubing Couping: 1.9'' ~ 4-1/2'' | |
| Pipe Standard: | API 5CT and 5B PSL1/PSL2 J55, K55, N80-1, N80-Q, |
| API 5CT and 5B L80-1, C90, C95, T95, P110, Q125 | |
| Surface: | Whole Phosphating or inside phosphating and outside coating |
| Thread: | NUE, EUE, STC, LTC, BTC, XC, HYDRILL CS |
| Special Service | Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156 |
| Packing: | By carton, wooden case, wooden pallet or requirement of customer |
| MOQ | 1 ton |
| Packing | Standard Seaworthy Packing |
| Supply Ability | 3000Tons per Month |
| API 5CT N80 Chemical Composition | |||||||||
| Grade | C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
| N80 type1/Q | 0.34-0.38 | 0.20-0.35 | 1.45-1.70 | 0.02 | 0.015 | 0.15 | / | / | / |
| API 5CT N80 Mechanical Property | |||
| Grades | Yield Strength (Mpa) | Tensile Strength (Mpa) | Elongation under load, % |
| N80 type 1 | 552-758 | 689 | 0.5 |
| N80 type Q | 552-758 | 689 | 0.5 |
| type | Casing Size OD (inches) | Coupling Size OD (inches) | Length (inches) | Weight per Coupling (lbs) | Palletized Carton Quantity | Palletized Carton Weight |
| API Tubing Couplings | 1.9 | 2.2 | 3.75 | 1.85 | – | – |
| 2.3/8 | 2.875 | 4.5 | 2.82 | 1,512 | 4264 | |
| 2.7/8 | 3.5 | 5.5 | 5.15 | 800 | 4120 | |
| 3.1/2 | 4.25 | 5.625 | 8.17 | 502 | 4101 | |
| 4 | 4.75 | 5.75 | 9.57 | 392 | – | |
| 4.1/2 | 5.2 | 6.5 | 10.76 | 252 | 2712 |
API 5CT N80 tubing couplings have a minimum yield strength of 552 MPa and tensile strength of 689 MPa, making them suitable for high-pressure applications. They are designed to withstand harsh conditions, including corrosive environments and high pressures.
The couplings provide secure and reliable connections, reducing leak risks and ensuring wellbore integrity. Manufactured to strict API standards, they offer consistent quality and performance across batches.
N80 couplings are suitable for a wide range of drilling applications, including deeper wells and moderately corrosive environments. They are compatible with other N80 components, ensuring seamless integration into existing systems.
N80 couplings balance cost and performance, making them cost-effective for many drilling operations. Their durability reduces maintenance and replacement needs, lowering overall operational costs.
The high strength and secure connections of N80 couplings reduce failure risks, enhancing safety. Compliance with API 5CT standards ensures they meet industry safety and performance requirements.
