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ASTM A519 4130 seamless steel pipe
, oil well drilling pipe tubing
, seamless drill rod tubing
ASTM A519 4130 Oil Well Drilling Pipe , Seamless Steel Pipe Drill Rod Tubing
ASTM A519 4130 Oil Well Drilling Pipe , Seamless Steel Pipe Drill Rod Tubing
Description
Our ASTM A519 4130 Oil Well Drilling Pipe is a premium seamless steel solution engineered for the toughest oil and gas drilling operations. Manufactured strictly in accordance with ASTM A519 standards, this drill rod tubing guarantees consistent quality and performance.
Crafted from 4130 alloy steel, it boasts exceptional mechanical properties, including high tensile strength (≥813 MPa) and yield strength (≥690 MPa), making it ideal for withstanding extreme downhole pressures, torque, and vibrations. The chromium-molybdenum composition enhances its toughness and resistance to corrosion, ensuring durability in harsh environments with high temperatures and corrosive fluids.
The seamless construction eliminates weld seams, a common weak point, providing superior structural integrity. Precision cold-drawing ensures tight tolerances, high straightness, and low eccentricity, facilitating easy installation and reliable connection with drilling equipment.
Available in a range of sizes (OD: 2 3/8" to 6 5/8", wall thickness: 0.219" to 0.500") and custom lengths, it suits various drilling needs, from onshore to offshore, shallow to deep wells. Each pipe undergoes rigorous testing, including ultrasonic and eddy current inspections, and comes with mill test certificates (MTC) for full traceability.
Specification
|
Parameter
|
Details
|
| Material Grade |
4130 |
| Standard |
GB/T 9808, ASTM A519 |
| Outer Diameter (OD) |
30 - 140 mm |
| Wall Thickness (WT) |
3 - 19 mm |
Chemical Composition
| Steel Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
| 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 |
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 |
Delivery Condition
+SR (Stress Relieved): Ideal for machining, ensures low residual stresses and high straightness.
+N (Normalized): Enhances microstructural uniformity and toughness.
+QT (Quenched & Tempered): Provides superior strength and hardness for extreme downhole conditions.
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, 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.
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