According to API 5CT
Grade:K55 J55 N80 L80 P110
Coupling Specification
Casing size OD (inches) | Coupling size OD (inched) | Length inches) | Weight per coupling (lds) |
2 3/8'' | 3.063 | 4.875 | 3.48 |
2 7/8'' | 3.668 | 5.5 | 5.29 |
3 1/2'' | 4.5 | 5.75 | 9.02 |
4 1/2'' | 5.563 | 6.5 | 13.31 |
Casing Coupling
Specification (mm) | OD (mm) | length | Boring Diameter (mm) | Bearing Surface Width(mm) | weight(kg) | ||
STC | LTC | ||||||
STC(mm) | LTC(mm) | NL | NL | ||||
139.70 | 153.67 | 171.45 | 203.20 | 142.08 | 3.18 | 11.54 | 14.15 |
177.80 | 194.46 | 184.15 | 228.60 | 180.18 | 4.76 | 18.49 | 23.87 |
219.08 | 244.48 | 196.85 | 254.00 | 223.04 | 6.35 | 35.79 | 47.77 |
244.48 | 269.88 | 196.85 | 266.70 | 248.44 | 6.35 | 39.75 | 56.11 |
273.05 | 298.45 | 203.20 | - | 277.02 | 6.35 | 45.81 | - |
339.72 | 365.12 | 203.20 | - | 343.69 | 5.56 | 56.57 | - |
