- Contact Person : Ms. Wu Edwina
- Company Name : Liuzhou Biaohuang Import & Export Co., Ltd.
- Tel : 86-772-3133116,13607801851
- Fax : 86-772-3133116
- Address : Guangxi,Liuzhou,1-15 Hongtai Mingcheng No.246 Rongjun Road,Liuzhou City Guangxi,China
- Country/Region : China
- Zip : 545005
API 7-1 Oilfield spiral hollow drill rod Drill Collar
Related Product Searches:API 7-1 Oilfield spiral hollow drill rod Drill Collar,High Quality drill collar joint,drill collar joint Drill Collar
Oilfield Drill Collar
The Drill Collar of Zhongzhong is made from AISI 4145H alloy steel, and completely meets the requirement of API Spec 7-1 and SY/T5144 Standard. It is the round pipe with smooth surface and thick wall, and the both ends are machined screw thread for connection. It is mainly used between the drill head and the drill pipe, so that it can make the drill head work reposefully and keep right trace by providing the pressure and weight for drill head.
Specification:
Connections | OD mm | ID mm | Length mm | |
NC23-31 | 79.4 | 31.8 | 9150 | |
NC26-35 | 88.9 | 38.1 | 9150 | |
NC31-41 | 104.8 | 50.8 | 9150 or 9450 | |
NC35-47 | 120.7 | 50.8 | 915 or 9450 | |
NC38-50 | 127.0 | 57.2 | 9150 or 9450 | |
NC44-60 | 152.4 | 57.2 | 9150 or 9450 | |
NC44-60 | 152.4 | 71.4 | 9150 or 9450 | |
NC44-62 | 158.8 | 57.2 | 9150 or 9450 | |
NC46-62 | 158.8 | 71.4 | 9150 or 9450 | |
NC46-65 | 165.1 | 57.2 | 9150 or 9450 | |
NC46-65 | 165.1 | 71.4 | 9150 or 9450 | |
NC46-67 | 171.4 | 57.2 | 9150 or 9450 | |
NC50-67 | 171.4 | 71.4 | 9150 or 9450 | |
NC50-70 | 177.8 | 57.2 | 9150 or 9450 | |
NC50-70 | 177.8 | 71.4 | 9150 or 9450 | |
NC50-72 | 184.2 | 71.4 | 9150 or 9450 | |
NC56-77 | 196.8 | 71.4 | 9150 or 9450 | |
NC56-80 | 203.2 | 71.4 | 9150 or 9450 | |
6 5/8REG | 209.6 | 71.4 | 9150 or 9450 | |
NC61-90 | 228.6 | 71.4 | 9150 or 9450 | |
7 5/8REG | 241.3 | 76.2 | 9150 or 9450 | |
NC70-97 | 247.6 | 76.2 | 9150 or 9450 | |
NC70-100 | 254.0 | 76.2 | 9150 or 9450 | |
8 5/8REG | 279.4 | 76.2 | 9150 or 9450 | |
