45MnMoB Grade Drilling Pipe: Unmatched Strength & Specialized Performance for Demanding Oilfield Applications
The 45MnMoB-grade drilling pipe is a high-performance alloy steel solution engineered for oilfield operations that demand exceptional strength, superior wear resistance, and enhanced impact toughness. With its unique chemical composition (notably high manganese and molybdenum content) and tailored mechanical properties, this grade stands out as an optimal choice for extreme drilling environments where standard grades fall short.
Why Choose 45MnMoB-Grade Drilling Pipes?
1. Built for Extremes – Delivers unmatched strength and wear resistance for high-load, high-wear drilling scenarios where standard grades fail.
2. Alloy-Optimized – Manganese and molybdenum enhance hardenability, high-temperature stability, and fatigue life – critical for modern deep drilling.
3. Tailored Hardness – Optional QT treatment pushes surface hardness to 32 HRC, combating abrasion and extending service intervals.
4. Reliable in Harsh Fluids – Low sulfur/phosphorus and fine microstructure resist corrosion and erosion in aggressive well environments.
45MnMoB-Grade Drilling Pipes – When your well demands more than ordinary steel can handle.
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.
Product Tags:
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EN10305-1 Steel Drilling Rod 45MnMoB Grade Seamless Steel Oil Well Drilling Pipe With Coupling Tube Images
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