| Customization: | Available |
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| After-sales Service: | Online Technical Support |
| Condition: | New |
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Drill pipe is a kind of steel pipe with thread at the tail. It is used to connect the surface equipment of drilling rig and the drilling and grinding equipment or bottom hole device at the bottom of drilling rig.The purpose of the drill pipe is to transport drilling mud to the bit and to raise, lower or rotate the bottom hole device together with the bit. Drill pipe must be able to withstand tremendous internal and external pressure, distortion, bending and vibration.In the process of oil and gas exploitation and refining, drill pipe can be used many times.Drill pipe can be divided into three categories: square drill pipe, drill pipe and heavy drill pipe.The order of connection is square drill pipe (1)+drill pipe (n, determined by well depth)+weighted drill pipe (n, determined by drill tool combination design).The classification of drill pipe, drill pipe joints, drill pipe specifications and steel grade and strength of drill pipe are introduced in detail.
1. High-Strength Joint
Friction welding generates heat through high-speed rotation, creating a metallurgical bond under pressure, achieving 90%-100% of the base material strength-far superior to traditional arc welding (70%-80%).
2. No Filler Material Required
The process relies solely on plastic deformation of the metal, eliminating the need for welding wire or flux, which reduces contamination risks.
3. Narrow Heat-Affected Zone (HAZ)
Friction welding's concentrated heat input results in a HAZ width of only 1-3 mm (compared to 5-10 mm in arc welding), minimizing microstructural degradation.
4. High Alignment Accuracy
Automated equipment ensures concentricity errors ≤0.2 mm, preventing premature failure due to misalignment-induced stress.
5. Energy-Efficient & Eco-Friendly
Each weld takes 20-60 seconds (vs. multi-pass arc welding + heat treatment), reducing energy consumption by >30% with no harmful emissions.
6. Compatible with Diverse Materials
Can join different steel grades (e.g., AISI 4145H pipe body + AISI 4137 tool joint) and even dissimilar metals (e.g., steel-aluminum hybrid joints).
| Specification | Nominal Weight (kg/m) | Unit Weight (kg/m) | OD (mm) | Steel Grade | Wall Thickness (mm) |
|---|---|---|---|---|---|
| 2 3/8 | 6.65 | 6.26 | 60.3 | E,X,G,S | 7.11 |
| 2 7/8 | 10.40 | 9.72 | 73.0 | E,X,G,S | 9.19 |
| 3 1/2 | 9.50 | 8.81 | 88.9 | E,X,G,S | 6.45 |
| 3 1/2 | 13.30 | 12.31 | 88.9 | E,X,G,S | 9.35 |
| 3 1/2 | 15.50 | 14.631 | 88.9 | X,G,S | 11.40 |
| 4 | 14.00 | 12.93 | 101.6 | E,X,G,S | 8.38 |
| 4 1/2 | 16.60 | 14.98 | 114.3 | E,X,G,S | 8.56 |
| Specification | Nominal Weight (kg/m) | Unit Weight (kg/m) | OD (mm) | Steel Grade | Wall Thickness (mm) |
|---|---|---|---|---|---|
| 4 1/2 | 16.60 | 14.98 | 114.3 | E,X,G,S | 8.56 |
| 4 1/2 | 20.00 | 18.69 | 114.3 | E,X,G,S | 10.92 |
| 5 | 16.25 | 14.87 | 127.0 | E,X,G,S | 7.52 |
| 5 | 19.50 | 17.93 | 127.0 | E,X,G,S | 9.19 |
| 5 | 25.60 | 24.03 | 127.0 | E,X,G,S | 12.70 |
| 5 1/2 | 21.90 | 19.81 | 139.7 | E,X,G,S | 9.17 |
| 5 1/2 | 24.70 | 22.54 | 139.7 | E,X,G,S | 10.54 |
| Specification | Nominal Weight (kg/m) | Unit Weight (kg/m) | OD (mm) | Steel Grade | Wall Thickness (mm) |
|---|---|---|---|---|---|
| 6 5/8 | 25.20 | 22.19 | 168.3 | E,X,G,S | 8.38 |
| 6 5/8 | 27.70 | 36.06 | 168.3 | E,X,G,S | 9.19 |
Besdrill is a specialized trading supplier of friction-welded drill pipes, serving global clients in the oil, gas, and drilling industries. Besdrill partners with certified high-quality factories to source and supply API-standard drill pipes, ensuring reliability and performance for demanding drilling applications.
1.Strict Quality Control
Supplies only API-certified (API Spec 5DP/7-1) drill pipes from trusted manufacturers, with rigorous inspection processes (e.g., UT, hardness testing, dimensional checks).
2.Global Sourcing Network
Partners with multiple top-tier factories across key industrial hubs (e.g., China, Europe), ensuring competitive pricing and flexible supply chain solutions.
3.Customization & Technical Support
Offers tailored solutions (e.g., steel grades: E75 to S135; coatings: chrome, tungsten carbide) and provides technical guidance for project-specific needs.
4.Fast Logistics & Inventory Readiness
Maintains strategic stock for popular sizes/grades, enabling shorter lead times compared to factory-direct orders.
5.Cost-Effective Trading Model
No factory overheads mean lower margins, passing cost savings to buyers without compromising quality.
6.Compliance & Documentation
Full traceability with mill test reports (MTRs), material certificates, and compliance docs for smooth customs clearance.
Friction-welded drill pipes are widely used in demanding drilling operations due to their high strength, durability, and reliable connections.
1. Oil & Gas Drilling
Onshore/Offshore Wells: Used in vertical, directional, and horizontal drilling for oil and gas extraction.
Deepwater & Ultra-Deep Wells: High-torque resistance makes them ideal for deep (>6,000m) and ultra-deep wells.
2. Geothermal Drilling
Withstands high-temperature environments (up to 300°C+) in geothermal energy exploration.
3. Mining & Mineral Exploration
Used in core drilling and blast-hole drilling for mineral exploration.
4. Water Well Drilling
Ensures efficient and long-lasting performance in freshwater and industrial water well projects.
5. Horizontal Directional Drilling (HDD)
Essential for pipeline and utility installations with smooth torque transmission.
6. Scientific & Research Drilling
Used in ice-core drilling (polar research) and geological survey projects.
7. Repair & Workover Operations
Suitable for re-entry drilling, sidetracking, and well intervention.
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