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[China]
Trade Verify
Address: 1903, Building 3, No. 10 Yard, Ronghua South Road, Beijing Economic and Technological Development Zone
Contact name:Manager
Beijing Jietaihongli Technology Co., Ltd. |
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Verified Suppliers
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Combined-interlock Kelly bar is composed of interlock Kelly bar and full multi-interlock Kelly bar.
For this type of Kelly bar , the first section is 3-keys interlock type, inner few sections are multi-type step keys , the outer keys are three- sections with three set of concave and convex form .
Specification
| No. | Diammeter of The First Section
| Sections | Key Pressure Type | Length of per section(m) | Drill depth | Torque(KN.M) | ||
| 1 | ¢440 | 3 | 4 | Interlocking | 9 - 15 | 24 – 55 | 220-260 | |
| 2 | ¢470(482) | 3 | 4 | Interlocking | 9 - 15 | 24 – 65 | 230-280 | |
| 3 | ¢508 | 3 | 4 | Interlocking | 9 – 15 | 24 – 70 | 260-360 | |
| 4 | ¢530(540) | 3 | 4 | 5 | Interlocking | 9 – 18 | 24 – 85 | 360-420 |
| 5 | ¢575(580) | 3 | 4 | 5 | Interlocking | 9 – 18 | 24 – 85 | 420-460 |
| 6 | ¢630 | 3 | 4 | 5 | Interlocking | 9 – 20 | 24 – 92 | 460-550 |
