The outer and inner diameter welded gates are removed by shearing and machining. Perform post-weld heat treatment on the heat-affected zone between the drill pipe upsetting and the tool joint to restore the performance of the welded zone. Post-weld heat treatment is a quenching and tempering process. Through this process, the weld zone first reaches the austenitizing temperature, and then the polymer is quenched. Then, an area wider than the weld zone is reheated to the tempering temperature by induction. Each post-weld heat treatment will be monitored and recorded to form a comprehensive strip chart. Perform a 100% hardness inspection on each weld to confirm that they are fully tempered. The post-weld heat treatment process continues to produce stronger, tougher, more uniform welding performance and ideal microstructures to maximize resistance to stress and fatigue.
For each drill pipe component, from raw materials to all manufacturing completion, complete product and process traceability is maintained. For pin and box tool joints, the unified cutting test certificate is confirmed by the incoming material test. Each tool joint has a unique product number, which provides the traceability of the entire manufacturing process. The same procedure applies to pipeline traceability.
The surface near the weld is smooth on both the outer and inner diameters. Precision machining and grinding provide a surface finish without stress rise. We use wet magnetic powder and ultrasonic inspection technology to perform 100% inspection on each welding area. Destructive tests such as tensile, yield, impact and bending tests of welding coverings are carried out for each specification batch and recorded.
Product specifications
1) Product size: all specifications from 2-3/8" to 6-5/8"
2) Product steel grade: E75; X95; G105 and S135
3) Product length: R1 R2 R3
4) Thickened form: IU EU IEU
5) Thread type: from NC23 to NC50, 5-1/2”FH, 6-5/8”FH
6) Specification level: API 5DP; API 7-2, API RP7G; NS-1
Product quality control
1) 100% ultrasonic full length inspection of drill pipe body inspection rate;
2) 100% of the joints and weld areas adopt ultrasonic and magnetic particle inspection
3) Thickened transition zone MiuN 140mm: Miu-R>300mm reduces the stress concentration at the disappearance of the internal thickened transition zone and improves fatigue performance.
Performance of high cost-performance drill pipe
1) Joint up and down test, joint thread cold rolling
2) Wear belt: ARNCO 100 XT, 150 XT, 300 XT, 350 XT, Tuboscope TCS 8000x TCS Titanium, Duraband
3) Inner coating: DPC, TK34L, TK34P, TC2000
4) To meet stringent drilling conditions, high-performance drill pipes other than API PSL-1 & PSL-2 can be produced, including but not limited to API 5DP PSL-3, NS-K DS-1 or customized according to customer special requirements
Detection flow chart
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2 3/8"-2 7/8"
No | Size OD | Nominal Weight(PPF) | Grade and upset type | Wall Thickness | Nominal ID |
Pipe Body Section Area | Connection Type | Outside Diameter | Inside Diameter | Make-Up Torque | Torsional Ratio Tool Joint to Pipe | Pin Tong Space | Box Tong Space | Adjusted Weight |
| In | mm | Ib/ft | Upset Type | in | mm | in | Sq/in | Type | in | in | ft-lb | Joint to Pipe | in | in | Ib/ft | kg/m |
1 | 2 3/8 | 60.30 | 6.65 | E-75 EU EU | 0.280 | 7. 11 | 1.815 | 1.843 | NC26 | 3 3/8 | 1 3/4 | 3900 | 1.10 | 9 | 10 | 7.17 | 10.68 |
2 | 2 3/8 | 60.30 | 6.65 | X-95 EU EU | 0.280 | 7.11 | 1.815 | 1.843 | NC26 | 3 3/8 | 1 3/4 | 3900 | 0.87 | 9 | 10 | 7.17 | 10.68 |
3 | 2 3/8 | 60. 30 | 6.65 | G-105 EU EU | 0.280 | 7. 11 | 1.815 | 1.843 | NC26 | 3 3/8 | 1 3/4 | 3900 | 0. 78 | 9 | 10 | 7.17 | 10.68 |
4 | 2 3/8 | 60.30 | 6.65 | S-135 EU EU | 0.280 | 7.11 | 1.815 | 1.843 | NC26 | 3 5/8 | 1 1/2 | 4900 | 0.80 | 9 | 10 | 7.62 | 11.35 |
5 | 2 7/8 | 73.00 | 6.85 | E-75 IU IU | 0.217 | 5.51 | 2.441 | 1.812 | NC26 | 3 3/8 | 1 3 4 | 3900 | 0.85 | 9 | 10 | 7.19 | 10.71 |
6 | 2 7/8 | 73.00 | 6.85 | E-75 EU EU | 0.217 | 5.51 | 2.441 | 1.812 | NC31 | 41/8 | 2 5/32 | 6200 | 1.42 | 9 | 11 | 7. 88 | 11.74 |
7 | 2 7/8 | 73.00 | 6.85 | X-95 IU IU | 0.217 | 5.51 | 2. 441 | 1.812 | NC26 | 3 1/2 | 1 1/2 | 4900 | 0.86 | 9 | 10 | 7. 50 | 11.17 |
8 | 2 7/8 | 73.00 | 6.85 | X-95EU EU | 0.217 | 5.51 | 2. 441 | 1.812 | NC31 | 4 1/8 | 2 5/32 | 6200 | 1.13 | 9 | 11 | 7. 88 | 11.74 |
9 | 2 7/8 | 73.00 | 6.85 | G-105IU IU | 0.217 | 5.51 | 2. 441 | 1.812 | NC26 | 3 5/8 | 1 3/4 | 3900 | 0. 64 | 9 | 10 | 7. 46 | 11.11 |
10 | 2 7/8 | 73.00 | 6.85 | G-105EU EU | 0.217 | 5.51 | 2. 441 | 1.812 | NC31 | 4 1/8 | 2 5/32 | 6200 | 1.02 | 9 | 11 | 7. 88 | 11.74 |
11 | 2 7/8 | 73. 00 | 6.85 | S-135IU IU | 0.217 | 5.51 | .2. 441 | 1.812 | NC26 | 3 5/8 | 1 1/2 | 4900 | 0. 62 | 9 | 10 | 7. 64 | 11.38 |
12 | 2 7/8 | 73. 00 | 6. 85 | S-135EU EU | 0.217 | 5.51 | 2.441 | 1.812 | NC31 | 4 1/8 | 2 1/8 | 6400 | 0.82 | 9 | 11 | 7.91 | 11.78 |
13 | 2 7/8 | 73. 00 | 10. 40 | E-75EU EU | 0.362 | 9.19 | 2.151 | 2.858 | NC31 | 4 1/8 | 2 1/8 | 6400 | 1.03 | 9 | 11 | 11.14 | 16. 59 |
14 | 2 7/8 | 73.00 | 10. 40 | E-75EU EU | 0.362 | 9.19 | 2.151 | 2.858 | NC26 | 3 1/2 | 1 1/2 | 4900 | 0.76 | 9 | 10 | 10. 79 | 16.07 |
15 | 2 7/8 | 73. 00 | 10. 40 | X-95EU EU | 0.362 | 9.19 | 2.151 | 2.858 | NC31 | 4 1/8 | 2 | 7100 | 0.90 | 9 | 11 | 11.27 | 16. 79 |
16 | 2 7/8 | 73. 00 | 10. 40 | X-95IU IU | 0.362 | 9.19 | 2. 151 | 2.858 | NC26 | 3 1/2 | 1 1/2 | 4900 | 0.60 | 9 | 10 | 10. 76 | 16.03 |
17 | 2 7/8 | 73. 00 | 10. 40 | G-105EU EU | 0. 362 | 9.19 | 2.151 | 2. 858 | NC31 | 4 1/8 | 2 | 7100 | 0.81 | 9 | 11 | 11.27 | 16. 79 |
18 | 2 7/8 | 73. 00 | 10. 40 | G-105IU IU | 0. 362 | 9.19_ | 2.151 | 2.858 | NC26 | 3 1/2 | 1 1/2 | 4900 | 0.54 | 9 | 10 | 10. 76 | 16.03 |
19 | 2 7/8 | 73. 00 | 10. 40 | S-135EU EU | 0. 362 | 9.19 | 2.151 | 2.858 | NC31 | 4 1/8 | 2 | 7100 | 0. 63 | 9 | 11 | 11.29 | 16. 82 |
20 | 2 7/8 | 73. 00 | 10.40 | S-135IU IU | 0.362 1 | 9.19 | 2.151 | 2.858 | NC26 | 3 5/8 | 1 1/2 | 4900 | 0.43 | 9 | 10 | 10. 90 | 16. 24 |
3 1/2"
No. | DRILL PIPE TABLES | Tool Joint Data | Assembly Data |
Size OD | Nominal Weight(PPF) | Grade and upset type | Wall Thickness | Pipe Body Nominal ID Section Area | Connection Type | Outside Diameter | Inside Diameter | Make-Up Torque | Torsional Ratio Tool Joint to Pipe | Pin Tong Space | Box Tong Space | Adjusted Weight |
|
|
| In | mm | Ib/ft | Upset Type | in | mm | in | Sq/in | Type | in | in | ft-lb | Joint to Pipe | in | in | Ib/ft | kg/m |
|
21 | 3 1/2 | 88.90 | 9.50 | E-75 EU | 0.254 | 6.45 | 2.992 | 2.590 | NC38 | 4 3/4 | 2 11/16 | 9700 | 1.28 | 10 | 12.5 | 11.07 | 16.49 |
|
22 | 3 1/2 | 88.90 | 9.50 | E-75 IU | 0.254 | 6.45 | 2.922 | 2.590 | NC31 | 41/8 | 2 1/8 | 6400 | 0.84 | 9 | 11 | 10.49 | 15.62 |
|
23 | 3 1/2 | 88.90 | 9. 50 | X-95 EU | 0.254 | 6.45 | 2.922 | 2. 590 | NC38 | 4 3/4 | 2 11/16 | 9700 | 1.01 | 10 | 12.5 | 11.07 | 16.49 |
|
24 | 3 1/2 | 88.90 | 9. 50 | X-95 IU | 0.254 | 6.45 | 2.922 | 2. 590 | NC31 | 4 1/8 | 2 | 7100 | 0. 74 | 9 | 11 | 10.61 | 15.80 |
|
25 | 3 1/2 | 88.90 | 9. 50 | G-105 EU | 0.254 | 6.45 | 2.922 | 2. 590 | NC38 | 4 3/4 | 2 11/16 | 9700 | 0.91 | 10 | 12.5 | 11.07 | 16.49 |
|
26 | 3 1/2 | 88.90 | 9. 50 | G-105 IU | 0.254 | 6.45 | 2.922 | 2. 590 | NC31 | 41/8 | 2 | 7100 | 0.67 | 9 | 11 | 10.61 | 15.80 |
|
27 | 3 1/2 | 88.90 | 9. 50 | S-135 EU | 0.254 | 6.45 | 2.922 | 2. 590 | NC38 | 4 7/8 | 2 9/16 | 10700 | 0. 79 | 10 | 12.5 | 11.45 | 17. 05 |
|
28 | 3 1/2 | 88.90 | 9. 50 | S-135 IU | 0.254 | 6.45 | 2.922 | 2. 590 | NC31 | 4 1/8 | 2 | 7100 | 0. 52 | 9 | 11 | 10.61 | 15.80 |
|
29 | 3 1/2 | 88.90 | 13. 30 | E-75 EU | 0. 368 | 9. 35 | 2. 764 | 3.621 | NC38 | 4 3/4 | 2 11/16 | 9700 | 0.97 | 10 | 12.5 | 14. 24 | 21.21 |
|
30 | 3 1/2 | 88.90 | 13. 30 | E-75 IU | 0. 368 | 9. 35 | 2.764 | 3.621 | NC31 | 4 1/8 | 2 | 7100 | 0.71 | 9 | 11 | 13.93 | 20.75 |
|
31 | 3 1/2 | 88.90 | 13. 30 | X-95 EU | 0. 368 | 9. 35 | 2. 764 | 3.621 | NC38 | 5 | 2 9/16 | 10700 | 0.86 | 10 | 12.5 | 14.84 | 22.10 |
|
32 | 3 1/2 | 88.90 | 13. 30 | X-95 IU | 0. 368 | 9.35 | 2. 764 | 3.621 | NC31 | 4 1/8 | 2 | 7100 | 0. 56 | 9 | 11 | 13.93 | 20.75 |
|
33 | 3 1/2 | 88.90 | 13. 30 | G-105 EU | 0. 368 | 9. 35 | 2. 764 | 3.621 | NC38 | 5 | 2 7/16 | 11700 | 0.85 | 10 | 12.5 | 15. 00 | 22. 34 |
|
34 | 3 1/2 | 88.90 | 13. 30 | G-105 IU | 0. 368 | 9.35 | 2. 764 | 3.621 | NC31 | 4 1/8 | 2 | 7100 | 0.51 | 9 | 11 | 13.93 | 20.75 |
|
35 | 3 1/2 | 88.90 | 13. 30 | S-135 EU | 0. 368 | 9. 35 | 2. 764 | 3.621 | NC38 | 5 | 2 1/8 | 14000 | 0. 79 | 10 | 12.5 | 15. 37 | 22.89 |
|
36 | 3 1/2 | 88.90 | 13. 30 | S-135 IU | 0. 368 | 9.35 | 2. 764 | 3.621 | NC31 | 4 1/8 | 2 | 7100 | 0.40 | 9 | n | 13.93 | 20.75 |
|
37 | 3 1/2 | 88.90 | 15. 50 | E-75 EU | 0.449 | 11.40 | 2.602 | 4. 304 | NC38 | 5 | 2 9/16 | 10700 | 0.96 | 10 | 12.5 | 16.94 | 25. 23 |
|
38 | 3 1/2 | 88.90 | 15. 50 | X-95 EU | 0.449 | 11.40 | 2.602 | 4. 304 | NC38 | 5 | 2 7/16 | 11700 | 0.83 | 10 | 12.5 | 17.11 | 25.49 |
|
39 | 3 1/2 | 88.90 | 15. 50 | G-105 EU | 0.449 | 11.40 | 2.602 | 4. 304 | NC38 | 5 | 2 1/8 | 14000 | 0.90 | 10 | 12.5 | 17. 50 | 26. 07 |
|
40 | 3 1/2 | 88.90 | 15. 50 | G-105 EU | 0.449 | 11.40 | 2.602 | 4. 304 | NC40 | 5 1/4 | 2 9/16 | 14600 | 0.94 | 9 | 12 | 17.24 | 25.68 |
|
41 | 3 1/2 | 88.90 | 15. 50 | S-135 EU | 0.449 | 11.40 | 2.602 | 4. 304 | NC38 | 5 | 2 1/8 | 14000 | 0. 70 | 10 | 12.5 | 17. 50 | 26. 07 |
|
42 | 3 1/2 | 88.90 | 15. 50 | S-135 EU | 0.449 | 11.40 | 2.602 | 4. 304 | NC40 | 5 1/2 | 2 1/4 | 17100 | 0.87 | 10 | 12.5 | 18.31 | 27.27 |
|
4 1/2"
No. | DRILL PIPE TABLES | Tool Joint Data |
|
Size OD | Nominal Weight(PPF) | Grade and upset type | Wall Thickness | Pipe Body Nominal ID Section Area | Connection Type | Outside Diameter | Inside Diameter | Make-Up Torque | Torsional Ratio Tool Joint to Pipe | Pin Tong Space | Box Tong Space | Adjusted Weight |
|
| In | mm | Ib/ft | Upset Type | in | mm | in | Sq/in | Type | in | in | ft-lb | Joint to Pipe | in | in | Ib/ft | kg/m |
43 | 4 | 101. 60 | 11.85 | E-75 | IU | 0.262 | 6. 65 | 3.476 | 3.077 | NC40 | 5 1/4 | 2 13/16 | 12400 | 1.21 | 9 | 12 | 13.41 | 19.97 |
44 | 4 | 101. 60 | 11.85 | X-95 | IU | 0.262 | 6. 65 | 3.476 | 3.077 | NC40 | 5 1/4 | 2 13/16 | 12400 | 0.95 | 9 | 12 | 13.41 | 19.97 |
45 | 4 | 101. 60 | 11.85 | G-105 | IU | 0. 262 | 6. 65 | 3. 476 | 3.077 | NC40 | 5 1/4 | 2 13/16 | 12400 | 0.86 | 9 | 12 | 13.41 | 19.97 |
46 | 4 | 101. 60 | 11.85 | S-135 | IU | 0.262 | 6. 65 | 3. 476 | 3.077 | NC40 | 5 1/2 | 2 9/16 | 14600 | 0.80 | 9 | 12 | 14. 23 | 21.20 |
47 | 4 | 101. 60 | 11.85 | E-75 | IU | 0. 330 | 8. 38 | 3. 340 | 3.805 | NC40 | 5 1/4 | 2 13/16 | 12400 | 1.01 | 9 | 12 | 15. 64 | 23. 30 |
48 | 4 | 101. 60 101.60 | 11.85 | E-75 | EU | 0. 330 | 8. 38 | 3.340 | 3.805 | NC46 | 6 | 3 1/4 | 17600 | 1.44 | 9 | 12 | 16.51 | 24. 59 |
49 | 4 | 101. 60 | 11.85 | X-95 | IU | 0. 330 | 8. 38 | 3. 340 | 3.805 | NC40 | 5 1/4 | 2 11/16 | 13500 | 0.87 | 9 | 12 | 15.82 | 23. 56 |
50 | 4 | 101. 60 | 11.85 | X-95 | EU | 0. 330 | 8. 38 | 3. 340 | 3.805 | NC46 | 6 | 3 1/4 | 17600 | 1.14 | 9 | 12 | 16.51 | 24. 59 |
51 | 4 | 101. 60 | 11.85 | G-105 | IU | 0. 330 | 8. 38 | 3. 340 | 3.805 | NC40 | 5 1/2 | 2 7/16 | 15600 | 0.92 | 9 | 12 | 16. 62 | 24. 76 |
52 | 4 | 101. 60 | 11.85 | G-105 | EU | 0. 330 | 8. 38 | 3.340 | 3.805 | NC46 | 6 | 3 1/4 | 17600 | 1.03 | 9 | 12 | 16.51 | 24. 59 |
53 | 4 | 101. 60 | 11.85 | S-135 | IU | 0. 330 | 8. 38 | 3. 340 | 3.805 | NC40 | 5 1/2 | 2 | 18900 | 0.87 | 9 | 12 | 17.15 | 25. 54 |
54 | 4 | 101. 60 | 11.85 | S-135 | EU | 0. 330 | 8. 38 | 3. 340 | 3.805 | NC46 | 6 | 3 | 20500 | 0.94 | 9 | 12 | 16.90 | 25.17 |
55 | 4 | 101. 60 | 15. 70 | E-75 | IU | 0. 380 | 9. 65 | 3. 240 | 4.322 | NC40 | 5 1/4 | 2 13/16 | 12400 | 0.91 | 9 | 12 | 17. 22 | 25. 65 |
56 | 4 | 101. 60 | 15. 70 | E-75 | EU | 0. 380 | 9. 65 | 3.240 | 4.322 | NC46 | 6 | 3 | 20500 | 1.52 | 9 | 12 | 18. 34 | 27. 32 |
57 | 4 | 101. 60 | 15. 70 | X-95 | IU | 0. 380 | 9. 65 | 3. 240 | 4. 322 | NC40 | 5 1/4 | 2 9/16 | 14600 | 0.85 | 9 | 12 | 17. 57 | 26.17 |
58 | 4 | 101. 60 | 15. 70 | X-95 | EU | 0. 380 | 9. 65 | 3. 240 | 4.322 | NC46 | 6 | 3 | 20500 | 1.20 | 9 | 12 | 18. 49 | 27.54 |
59 | 4 | 101. 60 | 15. 70 | G-105 | IU | 0. 380 | 9. 65 | 3. 240 | 4.322 | NC40 | 5 1/2 | 2 7/16 | 15600 | 0.83 | 9 | 12 | 18. 20 | 27.11 |
60 | 4 | 101.60 | 15. 70 | G-105 | EU | 0.380 | 9.65 | 3. 240 | 4.322 | NC46 | 6 | 3 | 20500 | 1.09 | 9 | 12 | 18.49 | 27. 54 |
61 | 4 | 101. 60 | 15. 70 | S-135 | IU | 0. 380 | 9. 65 | 3. 240 | 4. 322 | NC40 | 5 1/2 | 2 | 18900 | 0. 78 | 9 | 12 | 18. 73 | 27.90 |
62 | 4 | 101. 60 | 15. 70 | S-135 | EU | 0. 380 | 9. 65 | 3. 240 | 4.322 | NC46 | 6 | 3 | 20500 | 0.84 | 9 | 12 | 18.49 | 27. 54 |
63 | 4 1/2 | 114. 30 | 16. 60 | E-75 | IEU | 0. 337 | 8. 56 | 3.826 | 4. 407 | NC46 | 6 1/4 | 3 1/4 | 17600 | 1.10 | 9 | 12 | 19.14 | 28.51 |
64 | 4 1/2 | 114. 30 | 16. 60 | E-75 | IEU | 0. 337 | 8. 56 | 3.826 | 4. 407 | 4 1/2 FH | 6 | 3 | 17600 | 1.13 | 9 | 12 | 19.03 | 28. 35 |
65 | 4 1/2 | 114. 30 | 16. 60 | E-75 | EU | 0. 337 | 8. 56 | 3.826 | 4. 407 | NC50 | 6 5/8 | 3 3/4 | 19800 | 1.24 | 9 | 12 | 19.19 | 28. 58 |
66 | 4 1/2 | 114. 30 | 16. 60 | X-95 | IEU | 0. 337 | 8. 56 | 3.826 | 4. 407 | NC46 | 6 1/4 | 3 1/4 | 17600 | 0.87 | 9 | 12 | 19.14 | 28.51 |
67 | 4 1/2 | 114. 30 | 16. 60 | X-95 | IEU | 0. 337 | 8. 56 | 3. 826 | 4. 407 | 4 1/2 FH | 6 | 3 | 17600 | 0.89 | 9 | 12 | 19. 03 | 28. 35 |
68 | 4 1/2 | 114. 30 | 16. 60 | X-95 | EU | 0. 337 | 8. 56 | 3.826 | 4. 407 | NC50 | 6 5/8 | 3 3/4 | 19800 | 0.98 | 9 | 12 | 19.19 | 28. 58 |
69 | 4 1/2 | 114. 30 | 16. 60 | G-105 | IEU | 0. 337 | 8. 56 | 3.826 | 4. 407 | NC46 | 6 1/4 | 3 | 20500 | 0.92 | 9 | 12 | 19. 57 | 29.15 |
70 | 4 1/2 | 114. 30 | 16. 60 | G-105 | IEU | 0. 337 | 8. 56 | 3.826 | 4. 407 | 4 1/2 FH | 6 1/4 | 2 3/4 | 20100 | 0.93 | 9 | 12 | 19.96 | 29. 73 |
71 | 4 1/2 | 114. 30 | 16. 60 | G-105 | EU | 0. 337 | 8. 56 | 3. 826 | 4. 407 | NC50 | 6 5/8 | 3 3/4 | 19800 | 0.88 | 9 | 12 | 19.19 | 28. 58 |
72 | 4 1/2 | 114. 30 | 16. 60 | S-135 | IEU | 0. 337 | 8. 56 | 3.826 | 4. 407 | NC46 | 6 1/4 | 2 3/4 | 23200 | 0.81 | 9 | 12 | 19.96 | 29. 73 |
73 | 4 1/2 | 114. 30 | 16. 60 | S-135 | IEU | 0. 337 | 8. 56 | 3.826 | 4. 407 | 4 1/2 FH | 6 1/4 | 2 3/4 | 20100 | 0. 72 | 9 | 12 | 19.96 | 29. 73 |
74 | 4 1/2 | 114. 30 | 16. 60 | S-135 | EU | 0. 337 | 8. 56 | 3.826 | 4. 407 | NC50 | 6 5/8 | 3 1/2 | 23400 | 0.81 | 9 | 12 | 19. 65 | 29. 27 |
75 | 4 1/2 | 114. 30 | 20. 00 | E-75 | IEU | 0. 430 | 10.92 | 3.640 | 5. 498 | NC46 | 6 1/4 | 3 | 20500 | 1.08 | 9 | 12 | 22.89 | 34.09 |
76 | 4 1/2 | 114. 30 | 20. 00 | E-75 | EU | 0. 430 | 10.92 | 3.640 |
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