Home > Products > OCTG(oil country tubular goods) > API 5DP Kelly Pipe /Hexagonal drill pipe/Petroleum squar drill pipe in oil and gas industry
API 5DP Kelly Pipe /Hexagonal drill pipe/Petroleum squar drill pipe in oil and gas industry
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Product Details
| Brand Name | APS | Model Number | 2 3/8", 2 7/8", 3 1/2", 4", 4 1/2", 5", 5 1/2", 6 5/8" | |
| Type | Other, Kelly pipe | Machine Type | Drilling Tool | |
| Certification | API | Material | High Manganese Steel | |
| Processing Type | Forging | Use | Well Drilling |
Product Description
API Oilfield Kelly Pipe /Hexagonal drill pipe/Petroleum squar drill pipe
Kelly is main driver of the whole drill string. It transmits torsional energy from the rotary table through the drill string to the bit at the bottom of the hole, and is a long square or hexagonal, precision machined heavy steel bar that is supported by the swivel through the rotary table and is connected to the first joint of drill pipe in the drill string. Straightness of the kelly is very crucial in the manufacturing process, thus straightness inspections are carried out before, during and after each machining operation. All milling processes are performed on specially designed rigid Kelly mills to ensure tight tolerances and high quality drive sections.
Nominal Size(in) | Top Connection(LH) | Bottom Connection | I.D.(in) | Drive Section(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 5/8 REG LH 7 3/4 | 4 1/2 REG LH 5 3/4 | NC26 85.7 |
| 1 1/4 |
| 3 1/4 |
|
3 | 6 5/8 REG LH 7 3/4 | 4 1/2 REG LH 5 3/4 | NC31 4 1/8 | NC26 3 3/8 | 1 3/4 | 1 1/4 | 3 3/8 | 3 3/8 |
3 1/2 | 6 5/8 REG LH 7 3/4 | 4 1/2 REG LH 5 3/4 | NC38 4 3/4 | NC31 4 1/8 | 2 1/4 | 1 3/4 | 3 3/8 | 4 |
4 1/4 | 6 5/8 REG LH 7 3/4 | 4 1/2 REG LH 5 3/4 | NC46 6 1/4 | NC38 4 3/4 | 2 13/16 | 2 1/4 | 5 1/2 | 4 4/5 |
6 5/8 REG LH 7 3/4 | 4 1/2 REG LH 5 3/4 | NC50 6 3/8 | NC38 4 3/4 | 2 13/16 | 2 1/4 | 5 1/2 | 4 4/5 | |
5 1/4 | 6 5/8 REG LH 7 3/4 |
| 5 1/2 FH 7 | NC46 6 1/4 | 3 1/4 | 3 | 6 3/4 | 5 29/32 |
6 5/8 REG LH 7 3/4 |
| NC56 7 | NC50 6 3/8 | 3 1/4 | 3 1/4 | 6 3/4 | 5 29/32 | |
6 | 6 5/8 REG LH 7 3/4 |
|
| 5 1/2 FH 7 |
| 3 1/2 |
| 5 29/32 |
6 5/8 REG LH 7 3/4 |
|
| 5 1/2 FH 7 |
| 3 1/2 |
| 5 29/32 | |
1. Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341BHN and a minimum average Charpy impact value of 40 ft-lbs
2. Ends and drive sections, IDs and connections machined and inspected to API and NS-1 specifications
3. Ultrasonic inspection is performed on all sections
Contact Us
- Shaanxi APS Machinery Equipment Co., Ltd.
- Contact nameKaren yan Chat Now
- Phone86-029-63350698
- AddressRoom 11911, Shuzishenghuo Building A, Keji 5th Road, High-Tech Zone
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