| 出生地 |
Jiangsu China (Mainland) |
| 牌子的名字 |
chenlong |
| 类型 |
钻头领 |
| 机器型号 |
钻探工具 |
| 验证 |
研究所 |
| 材料 |
高锰铁 |
| 使用 |
钻井 |
The wall thickness of heavy weight drill pipe is between drill pipe and drill collar, its structure is similar with drill pipe. Its both tool joints and middle uoset are welded hard banding. Technical parameters meet with API Spec7-1 Standard.