we can provide OD 3-1/2' non-dig drill pipes which has strict requirements about torsion,tension,bending,friction and vibration.
Shijiazhuang Longway Petroleum Drill Tools CO,.LTD
The raw materials selected by our company are all the alloy structure steels for geographical usage produced by Bao Steel plant. After testing, both ends of the tube are thickened directly without welding. Then come to the heat treatment process of the whole pipe and the chipping edges process. After that, the pipe will be painted with nickel phosphor that can increase the hardness of air tightness of the thread surface. Before the finished pipes are plated and packaged, a series of tests have to be completed, including hardness, metallurgical structure, physical performances, etc.
SIZE | Weight | Length | OD | Pipe Wall Thickness | Thickening Type | Grade | Min Bend Radius | Max Torque | |||||
inch | mm | ft | m | ft | m | in | mm | in | mm |
|
| m | Kn/m |
2 | 50 | 56.2 | 25.5 | 10 | 3 | 1.986 | 50.8 | 0.256 | 6.5 | IEU | S135 | 38 | 4.8 |
2-3/8 | 60 | 79.4 | 36 | 10 | 3 | 2.375 | 60.32 | 0.295 | 7.5 | IEU | R780 | 42 | 6.5 |
S135 | 46 | 7 | |||||||||||
2-7/8 | 73 | 101.4 | 46 | 10 | 3 | 2.875 | 73.02 | 0.315 | 8.0 | IEU | R780 | 65 | 13 |
3-1/2 | 89 | 220.4 | 100 | 15 | 4.5 | 3.5 | 88.9 | 0.394 | 9.99 | IEU | R780 | 75 | 19 |
Otherwise we could supply the products according to your requirements.