DIN2391 Seamless Steel Drilling Rod 45MnMoB Grade Steel Oil Drilling Pipe With Casing Tube

​​45MnMoB Grade Drilling Pipe – Extreme Strength for Demanding Wells​​

      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.

​​Key Advantages​​

1.  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.

2.  ​​Premium Wear Resistance​​

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  ​​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.

3.  ​​Balanced Toughness​​

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  ​​Elongation ≥14%​​ – Absorbs shocks (e.g., stuck pipe, vibrations) without cracking.

4.  ​​Corrosion & Heat Resilience​​

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  ​​Low S/P (S≤0.015%, P≤0.020%)​​ – Resists corrosion in harsh fluids; molybdenum enhances high-temperature stability.

5.  ​​Weldable & Machinable​​

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  ​​Controlled welding process​​ (preheat for thick sections) and ​​efficient machining​​ for field adaptability.

​​Why Choose 45MnMoB?​​

 ​​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.​

Delivery Condition:

Stress Relief Annealing after Cold Working (+SR) (BKS)

Normalizing (+N) (NBK)

Quenching & Tempering (QT)

Chemical Composition