High-Strength Corrosion Resistant Quenched & Tempered Drill Rod Oil Drilling Pipe
4140 (42CrMo/42CrMo4) Grade Drilling Pipe - High-Strength Solution for Demanding Oilfield Wells
Engineered for high-pressure, high-load drilling environments, 4140 grade drilling pipe delivers exceptional strength, superior wear resistance, and reliable performance for the toughest oilfield applications.
- Ultimate Strength - Tensile strength ≥950 MPa, yield strength ≥850 MPa for deep wells and high-pressure reservoirs (far exceeding standard grades)
- Premium Hardness (28-33 HRC) - Exceptional resistance to abrasion and wear from drill cuttings and hard formations, extending service life
- Quenched & Tempered (QT) Process - Delivers balanced strength and toughness, preventing brittle failure under extreme loads
- High-Cost Performance - Chromium-molybdenum (Cr-Mo) alloying provides superior fatigue resistance and high-temperature stability vs. standard carbon steels
- Proven in Harsh Conditions - Trusted for ultra-deep wells, HPHT wells, and abrasive formations where ordinary pipes fail
Ideal for: Deep drilling, high-pressure reservoirs, hard rock formations, and heavy-duty operations.
Upgrade from 4130/1541 when extreme strength and wear resistance are required.
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)
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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