Oil drill pipe is the core component of drilling, made of high-strength alloy steel, used for transmitting power and conveying drilling fluid, with tensile, torsional and corrosion resistance characteristics.
| 0.D | Normal Weight | Thickness | Upstting Type | Grade | Thread Model | Joint ExtemalDiameter | Pin Thead Internal Diameter | Pin Thread Length | Box Thread Length | Elevator Diameter | |
| inch | mm | Ib/ft | mm | mm | mm | mm | mm | mm | |||
| 2-3/8 | 60.32 | 6.65 | 7.11 | EU | E | NC26 | 85.7 | 44.5 | 177.80 | 203.20 | 65.1 |
| 2-3/8 | 60.32 | 6.65 | 7.11 | EU | X,G | NC26 | 85.7 | 44.5 | 177.80 | 203.20 | 65.1 |
| 2-7/8 | 73.02 | 10.40 | 9.19 | EU | E | NC31 | 104.8 | 54.0 | 177.80 | 228.60 | 81.0 |
| 2-7/8 | 73.02 | 10.40 | 9.19 | EU | X,G | NC31 | 104.8 | 50.8 | 177.80 | 228.60 | 81.0 |
| 2-7/8 | 73.02 | 10.40 | 9.19 | EU | S | NC31 | 111.1 | 41.3 | 177.80 | 228.60 | 81.0 |
| 3-1/2 | 88.90 | 9.50 | 6.45 | EU | E | NC38 | 120.7 | 68.3 | 203.20 | 266.70 | 98.4 |
| 3-1/2 | 88.90 | 13.30 | 9.35 | EU | E | NC38 | 120.7 | 68.3 | 203.20 | 266.70 | 98.4 |
| 3-1/2 | 88.90 | 13.30 | 9.35 | EU | X | NC38 | 127.0 | 65.1 | 203.20 | 266.70 | 98.4 |
| 3-1/2 | 88.90 | 13.30 | 9.35 | EU | G | NC38 | 127.0 | 61.9 | 203.20 | 266.70 | 98.4 |
| 3-1/2 | 88.90 | 13.30 | 9.35 | EU | S | NC38 | 127.0 | 54.0 | 203.20 | 266.70 | 98.4 |
| 3-1/2 | 88.90 | 13.50 | 11.40 | EU | E | NC38 | 127.0 | 65.1 | 203.20 | 266.70 | 98.4 |
| 3-1/2 | 88.90 | 13.50 | 11.40 | EU | X | NC38 | 127.0 | 61.9 | 203.20 | 266.70 | 98.4 |
| 3-1/2 | 88.90 | 13.50 | 11.40 | EU | G | NC38 | 127.0 | 54.0 | 203.20 | 266.70 | 98.4 |
| 3-1/2 | 88.90 | 13.50 | 11.40 | EU | S | NC40 | 139.7 | 57.2 | 203.20 | 266.70 | 98.4 |
| 4 | 101.60 | 14.00 | 8.38 | IU | E | NC40 | 133.4 | 71.4 | 177.80 | 254.00 | 106.4 |
| 4 | 101.60 | 14.00 | 8.38 | IU | S | NC40 | 133.4 | 68.3 | 177.80 | 254.00 | 106.4 |
| 4 | 101.60 | 14.00 | 8.38 | IU | G | NC40 | 139.7 | 61.9 | 177.80 | 254.00 | 106.4 |
| 4 | 101.60 | 14.00 | 8.38 | IU | D | NC40 | 139.7 | 50.8 | 177.80 | 254.00 | 106.4 |
| 4 | 101.60 | 14.00 | 8.38 | EU | E | NC46 | 152.4 | 82.6 | 177.80 | 254.00 | 114.3 |
| 4 | 101.60 | 14.00 | 8.38 | EU | X,G | NC46 | 152.4 | 82.6 | 177.80 | 254.00 | 114.3 |
| 4 | 101.60 | 14.00 | 8.38 | EU | S | NC46 | 152.4 | 76.2 | 177.80 | 254.00 | 114.3 |
| 4-1/2 | 114.30 | 13.75 | 6.88 | IU | E | NC46 | 152.4 | 85.7 | 177.80 | 254.00 | 119.1 |
| 4-1/2 | 114.30 | 13.75 | 6.88 | EU | E | NC50 | 168.3 | 95.3 | 177.80 | 254.00 | 127.0 |
| 4-1/2 | 114.30 | 16.60 | 8.56 | EU | E | NC50 | 168.3 | 95.3 | 177.80 | 254.00 | 127.0 |
| 4-1/2 | 114.30 | 16.60 | 8.56 | EU | X,G | NC50 | 168.3 | 95.3 | 177.80 | 254.00 | 127.0 |
| 4-1/2 | 114.30 | 16.60 | 8.56 | EU | S | NC50 | 168.3 | 88.9 | 177.80 | 254.00 | 127.0 |
| 4-1/2 | 114.30 | 20.00 | 10.92 | EU | E | NC50 | 168.3 | 92.1 | 177.80 | 254.00 | 127.0 |
| 4-1/2 | 114.30 | 20.00 | 10.92 | EU | X,G | NC50 | 168.3 | 88.9 | 177.80 | 254.00 | 127.0 |
| 4-1/2 | 114.30 | 20.00 | 10.92 | EU | S | NC50 | 168.3 | 76.2 | 177.80 | 254.00 | 127.0 |
| 4-1/2 | 114.30 | 16.60 | 8.56 | IEU | E | NC46 | 168.3 | 82.6 | 177.80 | 254.00 | 119.1 |
| 4-1/2 | 114.30 | 16.60 | 8.56 | IEU | X,G | NC46 | 158.8 | 76.2 | 177.80 | 254.00 | 119.1 |
| 4-1/2 | 114.30 | 16.60 | 8.56 | IEU | S | NC46 | 158.8 | 69.9 | 177.80 | 254.00 | 119.1 |
| 4-1/2 | 114.30 | 20.00 | 10.92 | IEU | E | NC46 | 158.8 | 76.2 | 177.80 | 254.00 | 119.1 |
| 4-1/2 | 114.30 | 20.00 | 10.92 | IEU | X | NC46 | 158.8 | 69.9 | 177.80 | 254.00 | 119.1 |
| 4-1/2 | 114.30 | 20.00 | 10.92 | IEU | G | NC46 | 158.8 | 63.5 | 177.80 | 254.00 | 119.1 |
| 4-1/2 | 114.30 | 20.00 | 10.92 | IEU | S | NC46 | 158.8 | 57.2 | 177.80 | 254.00 | 119.1 |
| 5 | 127.00 | 19.50 | 9.19 | IEU | E | NC50 | 168.3 | 95.3 | 177.80 | 254.00 | 130.2 |
| 5 | 127.00 | 19.50 | 9.19 | IEU | X | NC50 | 168.3 | 88.9 | 177.80 | 254.00 | 130.2 |
| 5 | 127.00 | 19.50 | 9.19 | IEU | G | NC50 | 168.3 | 82.6 | 177.80 | 254.00 | 130.2 |
| 5 | 127.00 | 19.50 | 9.19 | S | NC50 | 168.3 | 69.9 | 177.80 | 254.00 | 130.2 | |
| 5 | 127.00 | 19.50 | 9.19 | IEU | E | 5(1/2)FH | 177.8 | 95.3 | 203.20 | 254.00 | 130.2 |
| 5 | 127.00 | 19.50 | 9.19 | IEU | X,G | 5(1/2)FH | 177.8 | 95.3 | 203.20 | 254.00 | 130.2 |
| 5 | 127.00 | 19.50 | 9.19 | IEU | S | 5(1/2)FH | 184.2 | 88.9 | 203.20 | 254.00 | 130.2 |
| 5 | 127.00 | 25.60 | 12.70 | IEU | E | NC50 | 168.3 | 88.9 | 177.80 | 254.00 | 130.2 |
| 5 | 127.00 | 25.60 | 12.70 | IEU | X | NC50 | 138.6 | 76.2 | 177.80 | 254.00 | 130.2 |
| 5 | 127.00 | 25.60 | 12.70 | IEU | G | NC50 | 168.3 | 69.9 | 177.80 | 254.00 | 130.2 |
| 5 | 127.00 | 25.60 | 12.70 | IEU | E | 5(1/2)FH | 177.8 | 88.9 | 203.20 | 254.00 | 130.2 |
| 5 | 127.00 | 25.60 | 12.70 | IEU | X | 5(1/2)FH | 177.8 | 88.9 | 203.20 | 254.00 | 130.2 |
| 5 | 127.00 | 25.60 | 12.70 | IEU | G | 5(1/2)FH | 184.2 | 88.9 | 203.20 | 254.00 | 130.2 |
| 5 | 127.00 | 25.60 | 12.70 | IEU | S | 5(1/2)FH | 184.2 | 82.6 | 203.20 | 254.00 | 130.2 |
Efficient drilling: Optimize design to increase drilling speed, shorten operation cycle, and reduce overall costs.
Strong durability: high wear and fatigue resistance, reducing replacement frequency and extending service life.
Deep adaptation: Special materials and processes support operations in ultra deep wells and high-temperature and high-pressure environments.
Safety and reliability: Strict quality inspection ensures no defects, good thread sealing, and prevents fracture and leakage.
Lightweight and energy-saving: Lightweight structure reduces energy consumption, reduces drilling rig load, and improves efficiency.
Universal compatibility: Compliant with international standards (such as API), compatible with mainstream drilling rigs and tools.
Easy maintenance: Standardized design facilitates detection and repair, reducing downtime.
Economic and environmental protection: Long lifespan and repairability reduce resource waste, meeting the needs of sustainable development.
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