30CrMo Seamless Oil Well Drilling Pipe with Superior Mechanical Properties, High Tensile Strength, and Corrosion Resistance
30CrMo Seamless Oil Well Drilling Pipe is a cold-drawn steel pipe drill rod tube engineered for demanding oil and gas drilling operations. Manufactured from premium 30CrMo alloy steel, this seamless pipe undergoes a precise cold-drawing process that ensures exceptional dimensional accuracy and smooth surface finish.
The alloy composition, featuring chromium (0.80-1.10%) and molybdenum (0.15-0.25%), provides superior mechanical properties. It boasts a minimum tensile strength of 860 MPa and yield strength of 725 MPa, making it highly capable of withstanding extreme pressures, torques, and dynamic loads in deep-well and harsh downhole environments.
Through meticulous heat treatment, including quenching and tempering, the pipe achieves a uniform microstructure that enhances impact toughness and fatigue resistance. This is crucial for prolonged and repetitive stresses experienced by drill rods in high-pressure, high-temperature (HPHT) wells, corrosive formations, and extended-reach drilling scenarios.
| Parameter | Details |
|---|---|
| Material Grade | 30CrMo, 4130 |
| Standard | GB/T 9808, ASTM A519 |
| Outer Diameter (OD) | 4 - 219 mm |
| Wall Thickness (WT) | 0.5 - 20 mm |
| Steel Grade | C | Si | Mn | P | S | Cr | Mo |
|---|---|---|---|---|---|---|---|
| 30CrMo/4130 | 0.28-0.33 | 0.15-0.35 | 0.40-0.60 | ≤0.040 | ≤0.040 | 0.80-1.10 | 0.15-0.25 |
| Steel Grade | Deliver Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRC) |
|---|---|---|---|---|---|
| 30CrMo/4130 | +SR | ≥813 | ≥690 | ≥15% | ≥24 |
+N (Normalized)
+QT
- High Strength and Durability: Suitable for applications requiring high strength and robust performance
- Good Weldability: Can be easily welded and fabricated, making it versatile for various construction and engineering purposes
- Thermal Stability: Maintains mechanical properties at high temperatures, ideal for high-temperature applications
- Corrosion Resistance: The alloying elements provide good resistance to corrosion, extending the pipe's service life
- Versatility: Used in a wide range of industries, including aerospace, automotive, oil and gas, and construction
- Water well drilling
- Geothermal wells drilling
- Mine blasting
- Fore poling
- Nonferrous metal mining projects
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