Products
Heavy-wall drill pipes (FLEX)
Design types:
- with a conical elevator ledge, without central swells;
- with a flat elevator ledge, without central swells;
- with a conical elevator ledge, with one central swell;
- with a flat elevator ledge, with one central swell;
- with a conical elevator ledge, with two central swells;
- with a flat elevator ledge, with two central swells;
- with a conical elevator ledge, without central swells with riffled flats;
- with a flat elevator ledge, without central swells with riffled flats.
Heavy-wall drill pipes sizes
| Diameter, mm | Thread as per GOST R 50864 (spec. 7) |
||||
|
Outer, D
|
Swells, Du
|
Openings, d
|
Elevator grooves, De
|
Pipe bodies, D2
|
|
| 105 | 102 | 51 | 92 | 89 | 3-86 (NC31) |
| 121 | 102 | 51 | 97 | 89 | 3-102 (NC38) |
| 121 | 102 | 57 | 97 | 89 | 3-102 (NC38) |
| 133 | 114 | 57 | 102 | 102 | 3-108 (NC40) |
| 133 | 114 | 62 | 102 | 102 | 3-108 (NC40) |
| 133 | 114 | 63,5 | 102 | 102 | 3-108 (NC40) |
| 159 | 127 | 71 | 114 | 114 | 3-122 (NC46) |
| 165 | 140 | 75 | 127 | 127 | 3-133 (NC50) |
| 168 | 140 | 75 | 127 | 127 | 3-133 (NC50) |
| 168 | 140 | 90 | 127 | 127 | 3-133 (NC50) |
| 178 | 152 | 85 | 140 | 140 | 3-147 (5 1/2 FH) |
| 178 | 152 | 95 | 140 | 140 | 3-147 (5 1/2 FH) |
| 178 | 152 | 100 | 140 | 140 | 3-147 (5 1/2 FH) |
| 184 | 152 | 90 | 140 | 140 | 3-147 (5 1/2 FH) |
| 184 | 152 | 100 | 140 | 140 | 3-147 (5 1/2 FH) |
| 203 | 181 | 100 | 168 | 168 | 3-171 (6 5/8 FH) |
| 203 | 181 | 115 | 168 | 168 | 3-171 (6 5/8 FH) |
| 203 | 181 | 120 | 168 | 168 | 3-171 (6 5/8 FH) |
The supply of products with other sizes can be agreed with the customer.