long life aw, bw drill pipe drilling rods and wireline rods
- $20.00 /piece
- 1 piece
- Changsha Exploration Machinery Factory
- Hunan, China
- Ms Nancy Guo
| Type: | Drill Pipe; | Processing Type: | Forging; |
| Packaging Detail: | Fumigation wooden box; | Brand Name: | CHANGTAN; |
| Payment Terms: | L/C,T/T; | Port: | Shanghai or Shenzhen; |
| Machine Type: | Drilling Tool; | Use: | geotechnical core drilling; |
| Place of Origin: | Hunan China; | Certification: | CE; |
| Material: | Carbon Steel; |
| Size(Type) | O.D. mm | I.D. mm |
| AQ | 44.7 | 37.3 |
| BQ | 55.7 | 46.1 |
| NQ | 70.0 | 60.2 |
| HQ | 89.0 | 78.0 |
| PQ | 114.5 | 101.5 |
| BW | 54 | 38 |
| AW | 43.7 | 30.7 |
A drill pipe is a high-strength steel pipe used in drilling. Depending on the drilling method and purpose of drilling, pipes come in different thickness and lengths, with the most common lengths being 3-10 meters. Drill pipes are joined together one by one as the drill progresses deeper into the bedrock. Together, the pipes form a drill string, which can extend several kilometers down into the ground.
Each drill pipe consists of three parts welded together, a central portion and two end pieces. The end piece contains either a male ("pin") or a female ("box") thread, which permits interconnection of two drill pipes. The entire drill string is subjected to extremely high loads during drilling, and the thread is always the most critical part in each pipe. If for any reason the male and female thread do not fit exactly into each other, the thread will most probably break and you will lose your entire drill string.
Changsha Exploration Machinery Factory focuses on this critical point. We have the experience and knowledge to customize your drill pipe to match the conditions you are drilling in. Our end pieces are manufactured in a high-quality steel which is then tempered to achieve a superior durability. Our technique extends the thread's lifespan by over 50% compared with steel grade 4140 that is frequently used.
