AISI 4130 30CrMo Chromoly Alloy Oil Drilling Pipe with High-Temperature Resistance and Corrosion Resistant Heavy-Wall Steel Pipe
This AISI 4130 (30CrMo) chromoly alloy heavy-wall drilling pipe is engineered for extreme geothermal well drilling. Its superior tensile strength, torsional resistance, and fatigue durability withstand high-temperature environments (200-400°C), corrosive brines, and abrasive formations.
The heavy-wall design ensures exceptional pressure integrity and compression resistance in extended-reach drilling. The chromium-molybdenum composition provides excellent resistance to H₂S corrosion and thermal cycling stresses.
Precision-manufactured through seamless extrusion and heat treatment, each pipe undergoes rigorous testing to international standards. Ideal for both drilling and casing applications in geothermal wells, it delivers extended service life and reduced downtime in the most challenging high-temperature operations.
| Specifications | ASTM, ASME and API |
|---|---|
| Size | O.D.: 4 to 219mm W. T.: 0.5 to 20mm |
| Specialized in | Large Diameter Size |
| Length | Within 13500mm |
| Type | Seamless |
| Shape | Round |
| End | Plain End, Beveled End, Treaded |
| Element | Content (%) |
|---|---|
| Iron, Fe | 97.03 - 98.22 |
| Chromium, Cr | 0.80 - 1.10 |
| Manganese, Mn | 0.40 - 0.60 |
| Carbon, C | 0.280 - 0.330 |
| Silicon, Si | 0.15 - 0.30 |
| Molybdenum, Mo | 0.15 - 0.25 |
| Sulfur, S | 0.040 |
| Phosphorous, P | 0.035 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength, ultimate | 560 MPa | 81200 psi |
| Tensile strength, yield | 460 MPa | 66700 psi |
| Modulus of elasticity | 190-210 GPa | 27557-30458 ksi |
| Bulk modulus (Typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (Typical for steel) | 80 GPa | 11600 ksi |
| Poissons ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 21.50% | 21.50% |
| Reduction of area | 59.6 | 59.60% |
| Hardness, Brinell | 217 | 217 |
| Hardness, Knoop (Converted from Brinell hardness) | 240 | 240 |
| Hardness, Rockwell B (Converted from Brinell hardness) | 95 | 95 |
| Hardness, Rockwell C (Converted from Brinell hardness) | 17 | 17 |
| Hardness, Vickers (Converted from Brinell hardness) | 228 | 228 |
| Machinability | 70 | 70 |
| STANDARD | UNS | CN | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
|---|---|---|---|---|---|---|---|---|
| AISI 4130 | G41300 | 30CrMo | 1.7218 | - | 25CrMo4 | JIS G4105 | BS 970 | - |
- Enhanced Collapse Resistance: Heavy-wall design withstands extreme external pressures
- Superior Mechanical Strength: High yield and tensile strength for deep well applications
- Excellent Fatigue Resistance: Performs reliably under cyclic loading conditions
- Improved Corrosion Resistance: Chromium content provides better corrosion resistance than carbon steel
- Seamless Reliability: Homogeneous microstructure without weld defects or imperfections
- Mine blasting
- Water well drilling
- Geothermal wells drilling
- Fore poling
- Coal
- Nonferrous metal mining projects
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