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.
Key Advantages
1. Ultimate Strength – Tensile strength ≥950 MPa, yield
strength ≥850 MPa for deep wells and high-pressure reservoirs
(far exceeding standard grades).
2. Premium Hardness (28–33 HRC) – Exceptional resistance to
abrasion and wear from drill cuttings and hard formations,
extending service life.
3. Quenched & Tempered (QT) Process – Delivers balanced
strength and toughness, preventing brittle failure under extreme
loads.
4. High-Cost Performance – Chromium-molybdenum (Cr-Mo) alloying
provides superior fatigue resistance and high-temperature
stability vs. standard carbon steels.
5. 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.
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.
