Επισημαίνω:
DIN2391 seamless steel drilling rod
, 45MnMoB grade oil drilling pipe
, steel drilling pipe with casing tube
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 - 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 - Elongation ≥14% – Absorbs shocks (e.g., stuck pipe, vibrations) without cracking.
4. Corrosion & Heat Resilience - Low S/P (S≤0.015%, P≤0.020%) – Resists corrosion in harsh fluids; molybdenum enhances high-temperature stability.
5. Weldable & Machinable - Controlled welding process (preheat for thick sections) and efficient machining for field adaptability.
Why Choose 45MnMoB?
1. Built for extremes – Outmatches 4130/4140 in wear resistance, beats 1541 in strength.
2. Alloy-optimized – Manganese/molybdenum duo ensures durability in high-impact, high-temperature wells.
3. Customizable hardness – QT treatment extends service life in abrasive zones.
4. 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.
Chemical Composition
| 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 |
|
|
Mechanical Properties
|
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 |
Delivery Condition:
1. Stress Relief Annealing after Cold Working (+SR) (BKS)
2. Normalizing (+N) (NBK)
3. Quenching & Tempering (QT)
FAQ:
1. Can you provide a sample to check the quality?
We can provide free sample with same or similar sizes for you to check tube quality.
You need to in charge of Express costs.
2. How about your production capacity?
3000 tons/Month.
3. What are your terms of payment?
30%TT in advance, Balance to be paid before shipment.
4. Where is your factory?
Zhangjiagang city, 1.5 hours away from Shanghai.
5. How can I get the quotation A.S.A.P?
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
6. How about the minimum order quantity?
Normally for one size above 1 ton.
Welcome to contact us! Thanks.
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