| Ort der Herkunft |
Jiangsu China (Mainland) |
| Marke |
chenlong |
| Geben |
Drill Kragen |
| Maschine Typ |
Bohren Werkzeug |
| Zulassung |
API |
| Material |
Manganhartstahl |
| Verwenden |
Brunnenbohrungen |
Integral spiral heavy weight drill pipe is extend thecentral upset of heavy weight drill pipe and cut spiral groove on it.