- Elevator Parts[1]
- Diesel Generators[4]
- Air Conditioner Parts[1]
- Air-Compressors[6]
- Drying Equipment[5]
- Mixing Equipment[1]
- Chemical Product Machinery[2]
- Concrete Pumps[2]
- Bending Machinery[10]
- Other Machine Tools[3]
- Punching Machine[10]
- Other Cutting & Forming Tools[3]
- Other Machine Tools Accessories[9]
- Machinery Processing Services[1]
- Cranes[4]
- Forklifts[3]
- Other Material Handling Equipment[2]
- Material Handling Equipment Parts[1]
- Metal Cutting Machinery[7]
- Metal Processing Machinery Parts[2]
- Other Metallurgy Machinery[2]
- Metallurgy Machinery Parts[1]
- Drilling Rig[10]
- Other Mining Machinery[10]
- Mining Machinery Parts[10]
- DC Motor[4]
- Other Motor[7]
- Other Machinery[2]
- Arc Welders[1]
- Shaft Couplings[1]
- Pumps[5]
- Valves[5]
- Steel Pipes[2]
- Other Firefighting Supplies[4]
- Power Tool Accessories[1]
- Electric Drill[1]
- Tool Parts[1]
- Contact Person : Mr. Xue aihong
- Company Name : Rugao Yaou Import & Export Trade Co., Ltd.
- Tel : 86-513-87635480
- Fax : 86-513-87632623
- Address : Jiangsu,Rugao,Room 907 #13 Jinjiuhuafu Ninghai RD.
- Country/Region : China
- Zip : 226500
Related Product Searches:NC-70 Spiral drill collar,High Quality,Spiral drill collar, api 7-1 spiral drill collar,NC-70
The drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large rigidity. drill collar are manufactured strictly from API Spec.7 and SY5144 standard.....
Drill Collar Number | O.D. | I.D. | ||
mm | in | mm | in | |
NC23-31 | 79.4 | 3 1/8 | 31.8 | 1 1/2 |
NC26-35(2 3/8 IF) | 88.9 | 3 1/2 | 38.1 | 1 1/2 |
NC31-41(2 7/8 IF) | 104.8 | 4 1/8 | 50.8 | 2 |
NC35-47 | 120.6 | 4 3/4 | 50.8 | 2 |
NC38-50(3 1/2 IF) | 127.0 | 5 | 57.2 | 2 1/4 |
NC44-60 | 152.4 | 6 | 57.2 | 2 1/4 |
NC44-60 | 152.4 | 6 | 71.4 | 2 13/16 |
NC44-62 | 158.8 | 6 1/4 | 57.2 | 2 1/4 |
NC46-62(4IF) | 158.8 | 6 1/4 | 71.4 | 2 13/16 |
NC46-65(4IF) | 165.1 | 6 1/2 | 57.2 | 2 1/4 |
NC46-65(4IF) | 165.1 | 6 1/2 | 71.4 | 2 13/16 |
NC46-67(4IF) | 171.4 | 6 3/4 | 57.2 | 2 1/4 |
N50-67(4 1/2 IF) | 171.4 | 6 3/4 | 71.4 | 2 13/16 |
NC50-70(4 1/2 IF) | 177.8 | 7 | 57.2 | 2 1/4 |
NC50-70(4 1/2 IF) | 177.8 | 7 | 71.4 | 2 13/16 |
NC50-72(4 1/2 IF) | 184.2 | 7 1/4 | 71.4 | 2 13/16 |
NC56-77 | 196.8 | 7 3/4 | 71.4 | 2 13/16 |
NC56-80 | 203.2 | 8 | 71.4 | 2 13/16 |
6 5/8 REG | 209.6 | 8 1/4 | 71.4 | 2 13/16 |
NC61-90 | 228.6 | 9 | 71.4 | 2 13/16 |
7 5/8 REG | 241.3 | 9 1/2 | 76.2 | 3 |
NC70-97 | 247.6 | 9 3/4 | 76.2 | 3 |
NC70-100 | 254 | 10 | 76.2 | 3 |
8 5/8 REG | 279.4 | 11 | 76.2 | 3 |
NC-70 Spiral drill collar