Technical Performance Features
1. Threads are phosphated or copper-plated for excellent wear resistance, sealing performance, corrosion resistance, anti-galling properties, and high connection strength.
2. Resistance to internal and external yield stress exceeds API standard values.
3. Complete range of large-diameter and high-steel-grade casing products.
During casing production
During casing production
During casing production
Detailed Parameters
| Specification mm(in) | Outer diameter mm(in) | Wall thickness mm(in) | Length mm（ft） |
|---|---|---|---|
| 5 | 127.00（5） | 5.59～12.70（0.22～0.50） | 7620～14630 （25～48） |
| 5 1/2 | 139.70（5.5） | 6.20～22.22（0.244～0.875） | |
| 6 5/8 | 168.28（6.625） | 7.32～12.06（0.288～0.475） | |
| 7 | 177.80（7） | 5.87～22.22（0.231～0.875） | |
| 7 5/8 | 193.68（7.625） | 7.62～19.05（0.300～0.750） | |
| 8 5/8 | 219.08（8.625） | 6.71～14.15（0.264～0.557） | |
| 9 5/8 | 244.48（9.625） | 7.92～20.24（0.312～0.797） | |
| 10 3/4 | 273.05（10.75） | 7.09～20.24（0.279～0.797） | |
| 11 3/4 | 298.45（11.75） | 8.46～14.78（0.333～0.582） | |
| 13 3/8 | 339.72（13.375） | 5.87～22.22（0.231～0.875） |
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