DD-25DC
Superior-quality pipe& advanced heat treatment process, high strength &high toughness(especially under low temperature)
Smooth and long upset transition area & strong hard banding-extended product life
To meet or exceed requirements of the API 5D,API 7G, API Q1 & ISO9001
Equipment with advanced inspection instruments and a strictly quality controlling system, the final products are guaranteed to be of superior and stable quality
Due to our professional technicians & product flexibility, we are capable of meeting some customers’ specific requirement.
Drill Pipe Specification
Size (inch) |
Norminal Weight (PPF) |
Calculated Plain-end Weight Wpe |
Outside Dia D |
Wall Thickness T |
Grade | Upset Ends for weld-on tool joints |
lb/ft kg/m | in mm | in mm | ||||
2 3/8 | 6.65 | 6.27 9.33 | 2.375 60.3 | 0.280 7.11 | E.X.G.S | E.U |
2 7/8 | 10.40 | 9.72 14.47 | 2.875 73.0 | 0.362 9.19 | E.X.G.S | E.U. or I.U. |
3 1/2 | 9.50 | 8.81 13.12 | 3.500 88.9 | 0.254 6.45 | E | E.U. or I.U. |
3 1/2 | 13.30 | 12.32 18.34 | 3.500 88.9 | 0.368 9.35 | E.X.G.S | E.U. or I.U. |
3 1/2 | 15.50 | 14.64 21.79 | 3.500 88.9 | 0.449 11.40 | E | E.U. or I.U. |
3 1/2 | 15.50 | 14.64 21.79 | 3.500 88.9 | 0.449 11.40 | X.G.S | E.U. or I.E.U. |
4 | 14.00 | 12.95 19.27 | 4.000 101.6 | 0.330 8.38 | E.X.G.S | E.U. or I.U. |
4 1/2 | 13.75 | 12.25 18.23 | 4.500 114.3 | 0.271 6.88 | E | E.U. or I.U. |
4 1/2 | 16.60 | 15.00 22.32 | 4.500 114.3 | 0.337 8.56 | E.X.G.S | E.U. or I.U. |
4 1/2 | 20.00 | 18.71 27.84 | 4.500 114.3 | 0.430 10.92 | E.X.G.S | E.U. or I.U. |
5 | 16.25 | 14.88 22.16 | 5.000 127.0 | 0.296 7.52 | X.G.S | I.U. |
5 | 19.50 | 17.95 26.70 | 5.000 127.0 | 0.362 9.19 | E | I.E.U |
5 | 19.50 | 17.95 26.70 | 5.000 127.0 | 0.362 9.19 | X.G.S | E.U. or I.U. |
5 | 25.60 | 24.05 35.80 | 5.000 127.0 | 0.500 12.70 | E | I.U. |
5 | 25.60 | 24.05 35.80 | 5.000 127.0 | 0.500 12.70 | X.G.S | E.U. or I.U. |
5 1/2 | 21.90 | 19.83 29.52 | 5.500 139.7 | 0.361 9.17 | E.X.G.S | I.E.U |
5 1/2 | 24.70 | 22.56 33.57 | 5.500 139.7 | 0.415 10.54 | E.X.G.S | I.E.U |
6 5/8 | 25.20 | 22.21 33.04 | 6.625 168.3 | 0.330 8.38 | E.X.G.S | I.E.U |
6 5/8 | 27.72 | 24.24 36.06 | 6.625 168.3 | 0.362 9.19 | E.X.G.S | I.E.U |