Henan Jianhui Construction Machinery CO.,LTD
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Price: | 1000.0~3000.0 USD |
Payment Terms: | T/T,L/C |
Place of Origin: | Henan, China (Mainland) |
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Kellys are available up to 46 feet long.Our kellys are made from 4145H modified alloy bars that are quenched and tempered full length. A hardness range of 285 to 341 BHN and a minimum impact value of 40ft-lbs are maintained one inch below the surface at room temperature. All ends and center drive sections trepanned to provide true bores. They are drifted to API specifications, and all connections are machined.
Specification:
Nom- | Top- | Connection(LH) | Bottom- | Connection | I.D.- | (in) | Drive- | Section(in) |
Size(in) | Standard O.D.(in) | Optional O.D.(in) | Square O.D.(in) | Hex.O.D.(in) | Square | Hex. | A | B |
2 1/2 | 6 5/8REG 7 3/4 | 4 1/2REG 5 3/4 | NC26 85.7 | 1 1/4 | 3 2/7 | |||
3 | 6 5/8REG 7 3/4 | 4 1/2 REG 5 3/4 | NC31 4 1/8 | NC26 3 3/8 | 1 3/4 | 1 1/4 | 4 | 3 3/8 |
3 1/2 | 6 5/8REG 7 3/4 | 4 1/2 REG 5 3/4 | NC38 4 3/4 | NC31 4 1/8 | 2 1/4 | 1 3/4 | 4 1/2 | 4 |
4 1/4 | 6 5/8REG 7 3/4 | 4 1/2 REG 5 3/4 | NC46 6 1/4 | NC38 4 3/4 | 2 13/16 | 2 1/4 | 5 9/16 | 4 25/32 |
4 1/4 | 6 5/8REG 7 3/4 | 4 1/2 REG 5 3/4 | NC50 6 3/8 | NC38 4 3/4 | 2 13/16 | 2 1/4 | 5 9/16 | 4 25/32 |
5 1/4 | 6 5/8REG 7 3/4 | 5 1/2FH 7 | NC46 6 1/4 | 3 1/4 | 3 | 7 | 6 | |
5 1/4 | 6 5/8REG 7 3/4 | NC56 7 | NC50 63/8 | 3 1/4 | 3 1/4 | 7 | 6 | |
6 | 6 5/8REG 7 3/4 | 5 1/2FH 7 | 3 1/2 | 6 13/16 | ||||
6 | 6 5/8REG 7 3/4 | NC56 7 | 3 1/2 | 6 13/16 |
The whole set of kelly bar with light weight, high strength, high linearity of the single section, thin pipe wall,
small seam between sections and good wear resistance of detal plate, it greatly satisfies the special requirements of rotary drilling machine.
With use of advanced processing equipment, processing technology, and tooling manufacture, our kelly bar has matched with many brands drilling machine
ceritificate