Vurgulamak:
A519 oil well drilling pipe
, 4130 oilfield drill pipe
, 4140 oil exportation pipe
A519 4130 4140 Oil Well Drilling Pipe , Oilfield Drill Pipe for Oil Exploration
A519 4130 4140 Oil Well Drilling Pipe , Oilfield Drill Pipe for Oil Exploration
Description
We introduce high-strength A519 4130/4140 Oil Well Drilling Pipes, engineered for extreme downhole conditions and international oil exportation projects. Manufactured in strict compliance with ASTM A519 standards, these seamless chromium-molybdenum alloy steel pipes deliver superior mechanical properties, including exceptional tensile strength (≥813 MPa for 4130, ≥950 MPa for 4140), outstanding impact toughness, and excellent fatigue resistance.
Ideal for drill rods, tool joints, casings, and heavy-weight drill pipes, our products are tailored to withstand high-pressure, high-temperature (HPHT) environments and corrosive well conditions. The precise chemical composition—4130 (Cr: 0.80-1.10%, Mo: 0.15-0.25%) and 4140 (Cr: 0.80-1.10%, Mo: 0.15-0.25%)—ensures enhanced hardenability, wear resistance, and structural integrity under dynamic loads.
Specification
|
Parameter
|
Details
|
| Material Grade |
4130, 4140 |
| Standard |
ASTM A519 |
| Outer Diameter (OD) |
30 - 140 mm |
| Wall Thickness (WT) |
3 - 20 mm |
| Delivery Condition |
+N, +SR, QT |
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 |
Features
High Strength-to-Weight Ratio: Provides necessary load-bearing capacity while managing the weight of the drill string.
Exceptional Toughness: Superior resistance to impact and shock loads encountered during drilling, tripping, and in doglegs, minimizing the risk of catastrophic failure.
Outstanding Fatigue Resistance: Withstands the cyclic bending and rotational stresses in the drill string, significantly extending service life.
Good H2S Resistance (Limited S & P): Low sulfur and phosphorus content offers
Packing
Standard Export Packing: Bundles with plastic end caps and wooden box package
Application
Drill Pipes & Tool Joints: Core material for high-strength drill string components.
Casing Tubing: Used in sections requiring enhanced mechanical performance.
Couplings & Subs: Critical connections in downhole assemblies.
Core Barrels: Inner and outer tubes for drilling core samples.
Mandrels & Valves: Components for wellhead and drilling tools.
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