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| Warranty: | 12months |
| Manufacturing Process: | Forging |
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5 1/4" 4 1/4"API Hexagonal Drilling Kelly Kelly Bar
drilling equipment API Hexagonal drill kelly
5 1/4" 4 1/4"API Hexagonal Drilling Kelly Kelly Bar
Hexagonal Kellys
Hexagonal drill kelly are made from AISI 4145H alloy bars that are quenched and tempered full length. A hardness range of 285 to 341 BHM and a minimum impact value of 54 Joules as per ASTM A 370 are maintained one inch bellow the surface at room temperature. To improve resistance to galling, all connections are phosphate-coated with an API thread compond. Each bar used to manufacture kellys has been examined with magnetic partice inspections and ultrsonic inspections.
1. Product: Hexagonal drill kelly
2. Raw material: AISI 4145H
3. Supply range: 3"- 6"
4. Packing: anti-rust package, steel shelf with plastic bags
5. Standard: API Spec 7-1 or SY/T6509 Standard.
6. Delivery time: within 30 days
7. Delivery condition: as customers' requirement, semi-finished forging or finished product
8. Test: Ultrasonic test, tensile test, impact test, hardness test, etc.
9. Mechanical Propriety :conforming to API 7-1 and 5D
Specification of Hexagonal drill pipe
| Kelly size | 76.2 | 88.9 | 108 | 133.4 | 133.4 | 152.4 | 152.4 | ||
| 3 | 3 1/2 | 4 1/4 | 5 1/4 | 5 1/4 | 6 | 6 | |||
| Lengthdrive Section |
LD Standard | 11280 | 11280 | 11280 | 11280 | 11280 | 11280 | 11280 | |
| LD optional | 15540 | 15540 | 15540 | 15540 | 15540 | ||||
| Lengthoverall | L Standard | 12190 | 12190 | 12190 | 12190 | 12190 | 12190 | 12190 | |
| L optional | 16460 | 16460 | 16460 | 16460 | 16460 | ||||
| Length Drive Section |
DFL Across flate | 76.2 | 88.9 | 108 | 133.4 | 133.4 | 152.4 | 152.4 | |
| DC Across cornere | 85.7 | 100.8 | 122.2 | 151.6 | 175.4 | 173 | 173 | ||
| DCC Across flate | 85.73 | 100 | 121.44 | 149.86 | 171.45 | 173.02 | 173.02 | ||
| RC Radlue | 6.4 | 6.4 | 9.9 | 9.9 | 15.9 | 9.5 | 9.5 | ||
| RCC Radlue | 42.9 | 50 | 60.7 | 75 | 85.7 | 86.5 | 86.5 | ||
| Wall thickness eccentric bore |
12.1 | 13.3 | 15.9 | 15.9 | 15.88 | 15.9 | 15.9 | ||
| Upper box connection |
Thread size and style LF |
Standard | 6 5/8 REG | 6 5/8 REG | 6 5/8 REG | 6 5/8 REG | 6 5/8 REG | 6 5/8 REG | 6 5/8 REG |
| Optional | 4 1/2 REG | 4 1/2 REG | 4 1/2 REG | ||||||
| OD | Du Standard | 196.9 | 196.9 | 196.9 | 196.9 | 196.9 | 196.9 | 196.9 | |
| Du Optional | 146.1 | 146.1 | 146.1 | ||||||
| Bevel diameter |
Lu | 406.4 | 406.4 | 406.4 | 406.4 | 406.4 | 406.4 | 406.4 | |
| DFStandard | 186.1 | 186.1 | 186.1 | 186.1 | 186.1 | 186.1 | 186.1 | ||
| DFOptional | 134.5 | 134.5 | 134.5 | ||||||
| Lower pin connection |
Label | NC26 | NC31 | NC38 | NC46 | NC50 | 5 1/2 FH | NC56 | |
| Outsize diameter | 85.7 | 104.8 | 120.7 | 158.8 | 161.9 | 177.8 | 177.8 | ||
| LL | 508 | 508 | 508 | 508 | 508 | 508 | 508 | ||
| DF Bevel diameter | 82.9 | 100.4 | 116.3 | 145.3 | 154 | 170.7 | 171.1 | ||
| Inside diameter | 31.8 | 44.5 | 57.2 | 71.4 | 71.4 | 82.6 | 82.6 | ||
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