| Name | J55 | K55 | N80-1 | N80-Q | L80-1 | P110 |
| Casing | a bright green band | two bright green bands | a bright red band | a bright red band + a green band | a red band + a brown band | a bright white band |
| Coupling | entire green coupling + a white band | entire green coupling | entire red coupling | entire red coupling + a green band | entire red coupling + a brown band | entire white coupling |
Specifications of OCTG tubing
Chemical Composition
1. Dimension range (OD inch): 1-1/2”----4 1/2”, 2. Dimension range (OD mm): 26.67----114.3 3. Type of upset: NUE, EUE, Plain end. 4. Standard: API SPEC 5CT 5. Main Steel Grade: H40, J55, N80, N80Q, L80, L80-1, L80-9Cr, L80-13Cr, P110 etc. 6. Type of Tubing: Non-upset tubing (NU), External-upset tubing (EUE), Integrated Joint (IJ). 7，Length| length | |||
| Project | R1 | R2 | R3 |
| Tubing | 6.10-7.32m | 8.53-9.75m | 11.58-12.80m |
| Casing | 4.88-7.62m | 7.62-10.36m | 10.36-14.63m |
Casing Tubing Steel color code
Mechanical Properties
| Standard | Grade | Composition（%） | ||||||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V | AIs | ||
| API SPEC 5CT | J55K55 | 0.34～0.39 | 0.20～ 0.35 | 1.25～1.50 | ≤0.020 | ≤0.03 | ≤0.15 | ≤0.20 | ≤0.20 |
|
| ≤0.020 |
| (37Mn5) | ||||||||||||
| N80 | 0.34～0.38 | 0.20～ 0.35 | 1.45～1.70 | ≤0.020 | ≤0.03 | ≤0.15 |
|
|
| 0.11 ～0.16 | ≤0.020 | |
| (36 Mn2V) | ||||||||||||
| L80(1) | ≤0.43 | ≤0.45 | ≤1.9 | ≤0.03 | ≤0.03 |
| ≤0.25 | ≤0.35 |
|
|
| |
| L80(9Cr) | ≤0.15 | ≤1.00 | 0.3～0.60 | ≤0.020 | ≤0.030 | 8～ 10.0 | ≤0.50 | ≤0.25 | 0.9 ～1.1 |
| ≤0.020 | |
| L80(13Cr) | 0.15～0.22 | ≤1.00 | 0.25～1.00 | ≤0.020 | ≤0.030 | 12.0～ 14.0 | ≤0.50 | ≤0.25 |
|
| ≤0.020 | |
| P110 | 0.26～0.35 | 0.17～ 0.37 | 0.40～0.70 | ≤0.020 | ≤0.030 | 0.80～ 1.10 | ≤0.20 | ≤0.20 | 0.15 ～0.25 | ≤0.08 | ≤0.020 | |
| (30CrMo) | ||||||||||||
| Standard | Grade | Tensile Strength（MPa） | Yield Strength（MPa） | Elongation（%） | Hardness |
| API SPEC 5CT | J55 | ≥517 | 379～552 | 0.5% | ≤241HB |
| K55 | ≥655 | 379~552 | 0.5% | ||
| N80 | ≥689 | 552~758 | 0.5% | ||
| L80（13Cr） | ≥655 | 552~655 | 0.5% | ||
| P110 | ≥862 | 758~965 | 0.6% |
Specifications Type of end-finish
| Outside Diameter | Wall Thickness | Weight | Grade and Upset Type* | |||||||||
| Non-Upset T&C | External Upset T&C | |||||||||||
| (In.) | (mm) | (In.) | (mm) | (lb/ft) | (kg/m) | (lb/ft) | (kg/m) | J55 | L80 | N80 | C90 | P110 |
| 2-3/8 | 60.32 | 0.167 | 4.24 | 4.00 | 5.95 | - | - | PN | PN | PN | PN | - |
| 0.190 | 4.83 | 4.60 | 6.85 | 4.70 | 6.99 | PNU | PNU | PNU | PNU | PNU | ||
| 0.254 | 6.45 | 5.80 | 8.63 | 5.95 | 8.85 | - | PNU | PNU | PNU | PNU | ||
| 0.336 | 8.53 | 7.35 | 10.94 | 7.45 | 11.09 | PU | - | PU | PU | - | ||
| 2-7/8 | 73.02 | 0.217 | 5.51 | 6.40 | 9.52 | 6.50 | 9.67 | PNU | PNU | PNU | PNU | PNU |
| 0.276 | 7.01 | 7.80 | 11.61 | 7.90 | 11.76 | - | PNU | PNU | PNU | PNU | ||
| 0.308 | 7.82 | 8.60 | 12.80 | 8.70 | 12.95 | - | PNU | PNU | PNU | PNU | ||
| 0.340 | 8.64 | 9.35 | 13.91 | 9.45 | 14.06 | - | PU | - | PU | - | ||
| 0.440 | 11.18 | 11.50 | 17.11 | - | - | N | PN | - | PN | - | ||
| 3-1/2 | 88.90 | 0.216 | 5.49 | 7.70 | 11.46 | - | - | PN | PN | PN | PN | - |
| 0.254 | 6.45 | 9.20 | 13.69 | 9.30 | 13.84 | - | PNU | PNU | PNU | PNU | ||
| 0.289 | 7.34 | 10.20 | 15.19 | - | - | PN | PN | PN | PN | - | ||
| 0.375 | 9.52 | 12.70 | 18.91 | 12.95 | 19.27 | - | PNU | PNU | PNU | PNU | ||
| 4 | 101.60 | 0.226 | 5.74 | 9.50 | 14.14 | - | - | PN | PN | PN | PN | - |
| 0.262 | 6.65 | - | - | 11.00 | 16.37 | PU | PU | PU | PU | - | ||
| 4-1/2 | 114.30 | 0.271 | 6.88 | 12.60 | 18.75 | 12.75 | 18.97 | PNU | PNU | PNU | PNU | - |
Product details
