| 出生地 |
Jiangsu China (Mainland) |
| 牌子的名字 |
Shuguang |
| 模式的数量 |
Sprial |
| 类型 |
钻头领 |
| 机器型号 |
钻探工具 |
| 验证 |
研究所 |
| 处理类型 |
建立 |
| 使用 |
钻井 |
Available with all sizes, Manufactured by US imported heat treatment line( induction heat treatment) and advanced equipments in domestic China Spiral, elevator and slip type Kellys, hexagonal drill collar