DIN2391 Standard 45MnMoB Grade Steel Oil Drilling Pipe for Ultra-Deep Well Capability
Engineered for ultra-deep, high-pressure, and abrasive drilling environments, 45MnMoB-grade drilling pipe combines exceptional strength, superior wear resistance, and enhanced toughness to tackle the toughest challenges.
- Extreme High Strength - Tensile ≥790 MPa, Yield ≥600 MPa - Reliable in ultra-deep wells (>3,000m) and high-pressure reservoirs (≥50 MPa), outperforming standard grades.
- Premium Wear Resistance - Manganese (1.05-1.35%) & Molybdenum (0.20-0.25%) - Boosts hardness (QT-treated up to 28-32 HRC) to resist drill cuttings and hard rock abrasion.
- Balanced Toughness - Elongation ≥14% - Absorbs shocks (e.g., stuck pipe, vibrations) without cracking.
- Corrosion & Heat Resilience - Low S/P (S≤0.015%, P≤0.020%) - Resists corrosion in harsh fluids; molybdenum enhances high-temperature stability.
- Weldable & Machinable - Controlled welding process (preheat for thick sections) and efficient machining for field adaptability.
- Built for extremes - Outmatches 4130/4140 in wear resistance, beats 1541 in strength.
- Alloy-optimized - Manganese/molybdenum duo ensures durability in high-impact, high-temperature wells.
- Customizable hardness - QT treatment extends service life in abrasive zones.
- For ultra-deep, high-wear, or HPHT wells, 45MnMoB is the ultimate choice.
Applications include fore poling (advance support), mine blasting, water well drilling, geothermal well drilling, and coal/nonferrous metal mining.
| Steel Grade | C | Si | Mn | P | S | Cr | Mo | B |
|---|---|---|---|---|---|---|---|---|
| 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 | |
| 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤0.040 | ≤0.040 | 0.80-1.10 | 0.15-0.25 | |
| 45MnMoB | 0.43-0.48 | 0.17-0.37 | 1.05-1.35 | ≤0.020 | ≤0.015 | 0.20-0.25 | 0.001-0.005 | |
| 1541 | 0.36-0.44 | - | 1.35-1.65 | ≤0.040 | ≤0.050 | |||
| 30CrMnSiA | 0.28-0.34 | 0.90-1.20 | 0.80-1.10 | ≤0.020 | ≤0.015 | 0.80-1.10 |
| Steel Grade | Deliver Condition | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | Hardness (HRC) |
|---|---|---|---|---|---|
| 4130 | + SR | ≥813 | ≥690 | ≥15% | ≥24 |
| 4140 | QT | ≥950 | ≥850 | ≥14% | 28 - 33 |
| 45MnMoB | + N | ≥790 | ≥600 | ≥14% | - |
| 1541 | + SR | ≥813 | ≥690 | ≥15% | ≥24 |
| 30CrMnSiA | QT | ≥850 | ≥750 | ≥14% | 26 - 31 |
- Stress Relief Annealing after Cold Working (+SR) (BKS)
- Normalizing (+N) (NBK)
- Quenching & Tempering (QT)
We can provide free sample with same or similar sizes for you to check tube quality. You need to in charge of Express costs.
3000 tons/Month.
30%TT in advance, Balance to be paid before shipment.
Zhangjiagang city, 1.5 hours away from Shanghai.
Please send us an inquiry with full details as following, quotation will sent to you A.S.A.P:
1). Tube Standard
2). Steel Grade
3). Tube Size and Size Tolerance
4). Tube length
5). Quantity
6). If any special requirements
Normally for one size above 1 ton.
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