4130 Grade Drilling Pipe – Reliable Strength & Weldability for
Standard Oilfield Wells
A versatile, cost-effective solution for conventional
drilling, 4130 grade drilling pipe combines balanced mechanical
strength, excellent weldability, and durable performance to meet
the needs of standard oilfield operations.
Key Advantages
1. Proven Strength – Tensile strength ≥813 MPa, yield strength
≥690 MPa for reliable operation in wells up to 3,000m depth and
moderate pressures.
2. Easy Welding – Low-carbon, chromium-molybdenum (Cr-Mo) alloy
allows field welding with minimal preheat, saving time and
costs.
3. Tough & Durable – 15% elongation absorbs vibrations and
shocks, reducing crack risks in daily drilling.
4. Cost-Effective – Affordable alloy mix (Cr-Mo optimized)
delivers high performance at a lower cost than premium grades.
5. Widely Used – Trusted in conventional oil/gas wells, water
wells, and geothermal projects worldwide.
Ideal for: Standard-depth wells (≤3,000m), moderate pressures, and
operations needing strong, weldable pipes.
Upgrade to 4140 for extreme depths; choose 1541 for budget-first
shallow wells.
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.
