Features and Benefits
1.Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341 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.Kelly bars ultrasonically inspected over full length and section;
4.Shipped in a protective steel-cased scabbard;
When ordering Please specify:
5.Kelly type ();
6.Nominal size and overall length;
7.Upper and lower Connections.
Specifications - Rotary Kelly
Kelly
Nom | 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 5/8REG 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 1/2REG 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 1/2REG 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 1/2REG 5 3/4 | NC46 6 1/4 | NC38 4 3/4 | 2 4/5 | 2 1/4 | 5 4/7 | 4 4/5 |
6 5/8REG 7 3/4 | 4 1/2REG 5 3/4 | NC50 6 3/8 | NC38 4 3/4 | 2 4/5 | 2 1/4 | 5 4/7 | 4 4/5 | |
5 1/4 | 6 5/8REG 7 3/4 | 5 1/2FH 7 | NC46 6 1/4 | 3 1/4 | 3 | 7 | 6 | |
6 5/8REG 7 3/4 | NC56 7 | NC50 6 3/8 | 3 1/4 | 3 1/4 | 7 | 6 | ||
6 | 6 5/8REG 7 3/4 | 5 1/2FH 7 | 3 1/2 | 6 4/5 | ||||
6 5/8REG 7 3/4 | NC56 7 | 3 1/2 | 6 4/5 | |||||
