| API thread drill pipe rod matched-up with a high-air pressure drill rig, we are doing pretty well |
| 1. Standard API thread forming and orientating processed at one step, which is our technical highlight |
| Â 2. Hardness and wear-resistance combined alloy steel, supplied by national top-level special steel manufacturer (pipe thickness and material can be user's choice) |
|  3. Not all friction welding is strong, after a specialized friction welding process, welding outcome can be ensured |
| 4. Pipe curvature correction is a must process for each drill pipe |
| Â 5. Each processing step is stringently controlled, all RARCs are CNC machined |
| Â 6. Premium alloy steel made joints strictly controlled heat treatment process and standard API thread processing technology, we pay high-attention to all these easily ignored details to ensure pipe stability and thread durability |
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