30CrMnSiA Grade Seamless Steel Oil Well Pipe for High-Pressure Drilling with Corrosion Resistance
The 30CrMnSiA-grade drilling pipe is engineered for oilfield operations that demand exceptional strength-to-weight ratio, superior corrosion resistance, and reliable weldability. With optimized chromium and manganese content, precise heat treatment, and balanced mechanical properties, this grade is ideal for high-pressure environments, corrosive formations, and applications requiring structural integrity under dynamic loads.
- Corrosion-Resistant Strength - Outperforms standard carbon steels in mildly aggressive fluids (brine, CO₂), ideal for water injection, coastal, or gas wells with corrosion risks.
- Weld-Friendly Design - Simplifies field welding and on-site modifications without sacrificing structural integrity, reducing operational costs.
- High-Strength & Lightweight - Delivers 850+ MPa tensile strength with lower weight than 4140, optimizing hoisting efficiency in deep wells.
- Balanced Cost & Performance - More affordable than 4140/4130 while providing superior corrosion resistance and weldability for mid-range drilling challenges.
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:
- Tube Standard
- Steel Grade
- Tube Size and Size Tolerance
- Tube length
- Quantity
- If any special requirements
Normally for one size above 1 ton.
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