- Elevator Parts[1]
- Diesel Generators[4]
- Air Conditioner Parts[1]
- Air-Compressors[10]
- Drying Equipment[9]
- Mixing Equipment[1]
- Separation Equipment[1]
- Chemical Product Machinery[2]
- Concrete Pumps[4]
- Concrete Truck[1]
- Excavators[1]
- Motor Graders[1]
- Construction Machinery Parts[1]
- Bending Machinery[9]
- Other Machine Tools[5]
- Punching Machine[10]
- Other Cutting & Forming Tools[7]
- Reamer[2]
- Other Machine Tools Accessories[10]
- Machinery Parts Stock[1]
- Cranes[9]
- Forklifts[4]
- Other Material Handling Equipment[3]
- Material Handling Equipment Parts[2]
- Metal Cutting Machinery[9]
- Other Metal Processing Machinery[1]
- Metal Processing Machinery Parts[10]
- Other Metallurgy Machinery[2]
- Metallurgy Machinery Parts[10]
- Drilling Rig[10]
- Mineral Separator[1]
- Other Mining Machinery[10]
- Mining Machinery Parts[10]
- DC Motor[5]
- Other Motor[7]
- Other Machinery[7]
- Rubber Processing Machinery[1]
- Arc Welders[4]
- Bushings[1]
- Shaft Couplings[1]
- Pumps[10]
- Used General Mechanical Components[1]
- Valves[9]
- Steel Pipes[7]
- Other Firefighting Supplies[4]
- Other Garden Tools[1]
- Power Tool Accessories[1]
- Electric Drill[4]
- Hydraulic Tools[1]
- Tool Parts[10]
Spiral drill collar
The drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension.....
Drill Collar Number | O.D | I.D | Length | Bevel Diameter | Refbend g Strength ratio | ||
mm | in | mm | in | ||||
NC23-31 | 79.4 | 3 1/8 | 31.8 | 1 1/2 | 9150 | 76.2 | 2.57:1 |
NC26-35(2 3/8 IF) | 88.9 | 3 1/2 | 38.1 | 1 1/2 | 9150 | 82.9 | 2.42:1 |
NC31-41(2 7/8 IF) | 104.8 | 4 1/8 | 50.8 | 2 | 9150 | 100.4 | 2.43:1 |
NC35-47 | 120.6 | 4 3/4 | 50.8 | 2 | 9150 | 114.7 | 2.58:1 |
NC38-50(3 1/2 IF) | 127.0 | 5 | 57.2 | 2 1/4 | 9150 | 121.0 | 2.38:1 |
NC44-60 | 152.4 | 6 | 57.2 | 2 1/4 | 9150&9450 | 144.5 | 2.49:1 |
NC44-60 | 152.4 | 6 | 71.4 | 2 13/16 | 9150&9450 | 144.5 | 2.84:1 |
NC44-62 | 158.8 | 6 1/4 | 57.2 | 2 1/4 | 9150&9450 | 149.2 | 2.91:1 |
NC46-62(4IF) | 158.8 | 6 1/4 | 71.4 | 2 13/16 | 9150&9450 | 150.0 | 2.63:1 |
NC46-65(4IF) | 165.1 | 6 1/2 | 57.2 | 2 1/4 | 9150&9450 | 154.8 | 2.76:1 |
NC46-65(4IF) | 165.1 | 6 1/2 | 71.4 | 2 13/16 | 9150&9450 | 154.8 | 3.05:1 |
NC46-67(4IF) | 171.4 | 6 3/4 | 57.2 | 2 1/4 | 9150&9450 | 159.5 | 3.18:1 |
N50-67(4 1/2 IF) | 171.4 | 6 3/4 | 71.4 | 2 13/16 | 9150&9450 | 159.5 | 2.37:1 |
NC50-70(4 1/2 IF) | 177.8 | 7 | 57.2 | 2 1/4 | 9150&9450 | 164.7 | 2.54:1 |
NC50-70(4 1/2 IF) | 177.8 | 7 | 71.4 | 2 13/16 | 9150&9450 | 164.7 | 2.73:1 |
NC50-72(4 1/2 IF) | 184.2 | 7 1/4 | 71.4 | 2 13/16 | 9150&9450 | 169.5 | 3.12:1 |
NC56-77 | 196.8 | 7 3/4 | 71.4 | 2 13/16 | 9150&9450 | 185.3 | 2.70:1 |
NC56-80 | 203.2 | 8 | 71.4 | 2 13/16 | 9150&9450 | 190.1 | 3.02:1 |
6 5/8 REG | 209.6 | 8 1/4 | 71.4 | 2 13/16 | 9150&9450 | 195.7 | 2.93:1 |
NC61-90 | 228.6 | 9 | 71.4 | 2 13/16 | 9150&9450 | 212.6 | 3.17:1 |
7 5/8 REG | 241.3 | 9 1/2 | 76.2 | 3 | 9150&9450 | 223.8 | 2.81:1 |
NC70-97 | 247.6 | 9 3/4 | 76.2 | 3 | 9150&9450 | 232.8 | 2.57:1 |
NC70-100 | 254 | 10 | 76.2 | 3 | 9150&9450 | 237.3 | 2.81:1 |
8 5/8 REG | 279.4 | 11 | 76.2 | 3 | 9150&9450 | 266.7 | 2.84:1 |
