China Oilfield Cementing Hydraulic Double Stage Collar, Multistage Collar, Find details about China Stage Collar, Multistage Collar from Oilfield Cementing Hydraulic Double Stage Collar, Multistage Collar
| Size, in | 5 1/2" | 7" | 9 5/8" | 13 3/8" |
| Max O. D., mm | Φ170 | Φ208 | Φ283 | Φ381 |
| Drill-out I. D., mm | Φ122 | Φ155 | Φ220 | Φ315 |
| Overall Length, mm | 1082 | 1182 | 1222 | 1280 |
| Rated Load, t | 140 | 170 | 210 | 300 |
| Sealing Capacity, MPa | 25 | 25 | 25 | 25 |
| Opening Pressure, MPa | 13 | 13 | 13 | 14 |
| Closing Pressure, MPa | 5 | 5 | 5 | 5 |
| Lower Sliding Sleeve I. D., mm | Φ85 | Φ115 | Φ176 | Φ203 |
| Upper Sliding Sleeve I. D., mm | Φ95 | Φ125 | Φ197 | Φ285 |