Resaltar:
ASTM A513 cold drawn drill rod
, 30CrMo steel oil well pipe
, low eccentricity drilling tube
ASTM A513 A519 Cold Drawn Seamless Drill Rod Tube 30CrMo Steel Oil Well Drilling Pipe With Low Eccentricity
30CrMo/34CrMo4 4130 Grade Drilling Pipe – Balanced Strength & Weldability for Versatile Oilfield Applications
Engineered for conventional to mid-depth oilfield wells, 4130 grade drilling pipe delivers optimal strength, weldability, and cost efficiency – making it the reliable choice for diverse drilling operations.
Key Features & Benefits
1. Balanced High Strength
Tensile strength ≥813 MPa, Yield strength ≥690 MPa – Provides reliable load-bearing capacity for medium-depth wells (≤3,000m) and standard pressure conditions (≤35 MPa), ensuring structural integrity during drilling.
2. Superior Weldability
Low carbon content with chromium-molybdenum (Cr-Mo) alloying – Enables easy field welding (minimal preheat/post-weld heat treatment required) while maintaining toughness, ideal for on-site casing connections or repairs.
3. Controlled Toughness & Ductility
Elongation ≥15% – Absorbs dynamic loads (e.g., bit vibration, pressure fluctuations) and resists brittle fracture, ensuring operational safety in varied well conditions.
4. Cost-Effective Performance
Moderate alloy cost (Cr-Mo optimized) – Delivers premium-grade strength at a lower price point than 4140, balancing performance and budget for conventional to mid-range wells.
5. Proven Reliability
Widely used in onshore/offshore conventional wells, water wells, and geothermal projects – Backed by decades of field performance in stable to moderately complex formations.
Why 4130?
1. Versatile Mid-Range Performance – Ideal for wells ≤3,000m with standard pressure/temperature , avoiding over-engineering of high-end grades (e.g., 4140).
2. Weld-Friendly & Easy to Maintain – Simplifies field operations (e.g., welding, threading) without sacrificing strength, reducing downtime and costs.
3. Better Than Carbon Steel – Outperforms basic carbon steels (e.g., 1541) in strength, fatigue resistance, and corrosion resistance (mild environments).
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.
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