OEM/ODM China Dth Hammer Manufacturers - Blast Hole Drill Pipe – TDS
OEM/ODM China Dth Hammer Manufacturers - Blast Hole Drill Pipe – TDS Detail:
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.
| Size | Nominal mass Lb/ft | Calculated weight type | Wall thickness | |||
| in. | mm | lb/ft | kg/m | in. | mm | |
| 2 3/8 | 60.3 | 6.65 | 6.26 | 9.32 | 0.28 | 7.11 |
| 2 7/8 | 73 | 10.4 | 9.72 | 14.48 | 0.362 | 9.19 |
| 3 1/2 | 88.9 | 9.5 | 8.81 | 13.12 | 0.254 | 6.45 |
| 3 1/2 | 88.9 | 13.3 | 12.31 | 18.34 | 0.368 | 9.35 |
| 3 1/2 | 88.9 | 15.5 | 14.63 | 21.79 | 0.449 | 11.4 |
| 3 1/2 | 88.9 | 15.5 | 14.63 | 21.79 | 0.449 | 11.4 |
| 4 | 101.6 | 14 | 12.93 | 19.26 | 0.33 | 8.38 |
| 4 1/2 | 114.3 | 13.75 | 12.24 | 18.23 | 0.271 | 6.88 |
| 4 1/2 | 114.3 | 16.6 | 14.98 | 22.31 | 0.337 | 8.56 |
| 4 1/2 | 114.3 | 20 | 18.69 | 27.84 | 0.43 | 10.92 |
| 5 | 127 | 16.25 | 14.87 | 22.15 | 0.296 | 7.52 |
| 5 | 127 | 19.5 | 17.93 | 26.71 | 0.362 | 9.19 |
| 5 | 127 | 19.5 | 17.93 | 26.71 | 0.362 | 9.19 |
| 5 | 127 | 25.6 | 24.03 | 35.79 | 0.5 | 12.7 |
| 5 | 127 | 25.6 | 24.03 | 35.79 | 0.5 | 12.7 |
| 5 1/2 | 139.7 | 21.90 | 19.81 | 29.51 | 0.361 | 9.17 |
| 5 1/2 | 139.7 | 24.70 | 22.54 | 33.57 | 0.415 | 10.54 |
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We will make just about every exertion for being excellent and perfect, and speed up our actions for standing during the rank of worldwide top-grade and high-tech enterprises for OEM/ODM China Dth Hammer Manufacturers - Blast Hole Drill Pipe – TDS , The product will supply to all over the world, such as: Munich, Malta, Ecuador, We have 48 provincial agencies in the country. We also have stable cooperation with several international trading companies. They place order with us and export products to other countries. We expect to cooperate with you to develop a larger market.
By Margaret from Algeria - 2017.09.16 13:44
This company has the idea of "better quality, lower processing costs, prices are more reasonable", so they have competitive product quality and price, that's the main reason we chose to cooperate.
By Lesley from New Zealand - 2018.09.29 17:23
