GB/T 9808 Standard 1541 Steel Grade Oil Drilling Pipe with Excellent Microstructure and Seamless Coupling Tube
1541 Grade Drilling Pipe - The Practical, Cost-Effective Workhorse for Everyday Drilling
When your drilling operation prioritizes efficiency, affordability, and reliable performance for standard conditions, the 1541-grade drilling pipe delivers exactly what you need. This budget-friendly carbon-manganese steel solution is engineered to handle routine well depths, stable formations, and cost-sensitive projects without unnecessary frills - making it the smart choice for maximizing value on every meter drilled.
- No expensive alloys (Cr/Mo-free) - Directly reduces raw material costs by 20-30% compared to high-end grades like 4140
- Simplified processing (normalized only) - Eliminates costly heat treatments, slashing production expenses while maintaining core strength
- Tensile Strength: 800-950 MPa | Yield Strength: 600-750 MPa - Delivers ample load-bearing capacity for wells up to 3,000m depth and medium pressure (≤35 MPa)
- Elongation ≥16% - Provides flexibility to absorb minor shocks (e.g., tripping, rotation) without compromising structural integrity
- Excellent weldability - No preheating or post-weld heat treatment needed for standard field joints, accelerating on-site operations
- Good machinability - Supports efficient threading and end finishing, reducing manufacturing and maintenance downtime
Engineered for soft-to-medium-hard rock (e.g., sandstone, shale, clay) with low abrasion risk, thriving in vertical wells, shallow gas storage, and exploration holes.
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)
1). Tube Standard
2). Steel Grade
3). Tube Size and Size Tolerance
4). Tube length
5). Quantity
6). If any special requirements
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.