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drill pipes in diameters of 50/60/73/89/114/127 millmeters(API CERTIFICATION)
drilling joints in diameters of 68/78/105/121 millmeters
drill collar in diameters of 121/146/159/178
geological drilling pipes in diameters of 42/50/60/73/89 millmeters
drilling joints in diameters of 57/165/75 millmeters
we are factory specializing in the manufacture and export of drill pipe, drill collars and drilling joints(API and other standard) for more than thirty years.
Complete in specifications, quality and quantity assured, competitively priced!
Drill Pipe | |||||||
Size(inch) | Weight Designation | Calculated Plain-End weight | Outside Diam. | Wall Thickness | |||
Lb/ft | Kg/m | Inch | mm | Inch | mm | ||
2-3/8 | 6.65 | 6.26 | 9.32 | 2.375 | 60.3 | 0.280 | 7.11 |
2-7/8 | 10.40 | 9.72 | 14.48 | 2.875 | 73.0 | 0.362 | 9.19 |
3-1/2 | 9.50 | 8.81 | 13.12 | 3.500 | 88.9 | 0.254 | 6.45 |
3-1/2 | 13.30 | 12.31 | 18.34 | 3.500 | 88.9 | 0.368 | 9.35 |
3-1/2 | 15.50 | 14.63 | 21.79 | 3.500 | 88.9 | 0.449 | 11.40 |
4 | 14.00 | 12.93 | 19.26 | 4.000 | 101.6 | 0.330 | 8.38 |
4-1/2 | 13.75 | 12.24 | 18.23 | 4.500 | 114.3 | 0.271 | 6.88 |
4-1/2 | 16.60 | 14.98 | 22.31 | 4.500 | 114.3 | 0.337 | 8.56 |
4-1/2 | 20.00 | 18.69 | 27.84 | 4.500 | 114.3 | 0.430 | 10.92 |
4-1/2 | 16.25 | 14.87 | 22.15 | 4.500 | 114.3 | 0.296 | 7.52 |
5 | 19.50 | 17.93 | 26.71 | 5.000 | 127 | 0.362 | 9.19 |
5 | 25.60 | 24.03 | 35.79 | 5.000 | 127 | 0.500 | 12.70 |
well drilling pipes