Friction welded standard API DTH drill pipes for rock drilling and well drilling
Our DTH drill pipes are widely used in mining,water well drilling,geothermal,oil and all kinds of DTH rock drilling,with high quality low carbon steel to ensure good resistance to strengthen and tensile,friction welded to ensure the adapter and pipe connect tightly as a whole set the cyclic extrusion-compression ensure reliable pipe.
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DTH DRILLING PIPES
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Outer Diameter(mm)
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Wall thickness(mm) | Thread Pin/Box | Length(m) |
| 76 | 6-8.5 | API 2 3/8" reg | 1-9 |
| 89 | 6.5-8.5 | API 2 3/8" reg | 1-9 |
| 102 | 6.5-8.5 | API 3 1/2" reg | 1-11 |
| 114 | 8.5-10 | API 3 1/2" reg | 1-11 |
| 127 | 8.5-10 | API 3 1/2" reg | 1-11 |
| 152 | 8.5-10 | API 4 1/2" reg | 1-6 |
| 178 | 10-12.7 | API 4 1/2" reg | 1-6 |
| ------The other specification drill pipes are available upon request. | |||
| ------Kind of thread,API Reg,API IF or BECO or produce as customer required | |||
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------All of the drill pipes are friction welded
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| API Casing pipe | ID mm |
Length m |
Slot Length mm |
Slot No. No./m |
Slot width mm |
Slot Tolerance |
Valid Filter Area cm/m |
Max. Strength KN |
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Spec mm |
Thickness mm |
Per Weight kg/m |
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| 60.32 | 5 | 6.84 | 50.3 | 3 | 80 | 200 | 0.3 | ±50 | 48 | 512.54 |
| 73.02 | 5.5 | 9.15 | 62 | 240 | 57.6 | 688.55 | ||||
| 88.9 | 6.5 | 13.22 | 75.9 | 280 | 67.2 | 995.1 | ||||
| 101.6 | 6.5 | 15.22 | 88.6 | 300 | 72 | 1151.2 | ||||
| 114.3 | 7 | 18.47 | 100.3 | 10 | 320 | 76.8 |
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