Steel Grade: J55, K55, L80, N80, C90, C95, T95, P110.
Tubing size: 1.9"-4 1/2"
End finish: Plain end; Non-upset threaded and coupled; External upset threaded and coupled.
Thread: Short round thread; Long round tread; Buttress thread
Application: Tubing is used to extracting petroleum and natural gas from a well.
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| Item | Outer Diameter | Wall Thickness | Â | Length | Rang 1 | Rang 2 | Rang 3 | |
| D<114.3 | D>=114.3 | Â | Tubing | 6.10~7.32 | 8.53~9.57 | Â | ||
| Tolerance | ±0.79 | -0.5%,+1% | +/-12.50% |    | Casing | 4.88~7.62 | 7.62~10.36 | 10.36~14.63 |
| Grade | Chemical Compositions (%) | ||||||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V | Als | |
| J55,K55 | 0.34~0.39 | 0.20~0.35 | 1.25~1.5 | ≤0.02 | ≤0.015 | ≤0.15 | ≤0.20 | ≤0.20 |  |  | ≤0.020 |
| N80 | 0.34~0.38 | 0.20~0.35 | 1.45~1.7 | ≤0.02 | ≤0.015 | ≤0.15 |  |  |  | 0.11~0.16 | ≤0.020 |
| L80 | 0.15~0.22 | ≤1.00 | 0.25~1.0 | ≤0.02 | ≤0.010 | 12.0~14.0 | ≤0.20 | ≤0.20 |  |  | ≤0.020 |
| P110 | 0.26~0.35 | 0.17~0.37 | 0.40~0.7 | ≤0.02 | ≤0.010 | 0.80~1.10 | ≤0.20 | ≤0.20 | 0.15~0.25 | ≤0.08 | ≤0.020 |
| Mechanical properties | |||||
| Standard | Grade | Tensile strength(Mpa) | Yield strength(Mpa) | Elongation (%) | Hardness |
| API SPEC 5CT | J55 | ≥517 | 379~552 | Check the table |  |
| K55 | ≥517 | ≥655 |  | ||
| N80 | ≥689 | 552~758 |  | ||
| L80 | ≥655 | 552~655 | ≤241HB | ||
| P110 | ≥862 | 758~965 |  | ||
 Standard: API 5CT, API 5B
Steel Grade: J55, K55, L80, N80, C90, C95, T95, P110.
Tubing size: 1.9"-4 1/2"
End finish: Plain end; Non-upset threaded and coupled; External upset threaded and coupled.
Thread: Short round thread; Long round tread; Buttress thread
Application: Tubing is used to extracting petroleum and natural gas from a well.
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| Item | Outer Diameter | Wall Thickness | Â | Length | Rang 1 | Rang 2 | Rang 3 | |
| D<114.3 | D>=114.3 | Â | Tubing | 6.10~7.32 | 8.53~9.57 | Â | ||
| Tolerance | ±0.79 | -0.5%,+1% | +/-12.50% |    | Casing | 4.88~7.62 | 7.62~10.36 | 10.36~14.63 |
| Grade | Chemical Compositions (%) | ||||||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V | Als | |
| J55,K55 | 0.34~0.39 | 0.20~0.35 | 1.25~1.5 | ≤0.02 | ≤0.015 | ≤0.15 | ≤0.20 | ≤0.20 |  |  | ≤0.020 |
| N80 | 0.34~0.38 | 0.20~0.35 | 1.45~1.7 | ≤0.02 | ≤0.015 | ≤0.15 |  |  |  | 0.11~0.16 | ≤0.020 |
| L80 | 0.15~0.22 | ≤1.00 | 0.25~1.0 | ≤0.02 | ≤0.010 | 12.0~14.0 | ≤0.20 | ≤0.20 |  |  | ≤0.020 |
| P110 | 0.26~0.35 | 0.17~0.37 | 0.40~0.7 | ≤0.02 | ≤0.010 | 0.80~1.10 | ≤0.20 | ≤0.20 | 0.15~0.25 | ≤0.08 | ≤0.020 |
| Mechanical properties | |||||
| Standard | Grade | Tensile strength(Mpa) | Yield strength(Mpa) | Elongation (%) | Hardness |
| API SPEC 5CT | J55 | ≥517 | 379~552 | Check the table |  |
| K55 | ≥517 | ≥655 |  | ||
| N80 | ≥689 | 552~758 |  | ||
| L80 | ≥655 | 552~655 | ≤241HB | ||
| P110 | ≥862 | 758~965 |  | ||
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