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34CrMo4 4130 Oil Drilling Pipe for Critical Applications for Drill Rod Tubing
34CrMo4 4130 Oil Drilling Pipe for Critical Applications for Drill Rod Tubing
Description
This 34CrMo4/4130 chromoly alloy drilling pipe represents high-performance seamless tubing engineered for critical drilling applications where failure is not an option. Manufactured to exacting international standards, this pipe delivers exceptional mechanical properties including minimum 110,000 psi yield strength, superior impact toughness, and excellent fatigue resistance for the most demanding downhole conditions.
The optimized chemical composition of chromium-molybdenum steel provides outstanding performance in extreme environments, featuring enhanced resistance to stress corrosion cracking and hydrogen embrittlement. Its precise manufacturing process ensures uniform wall thickness and dimensional accuracy, critical for maintaining reliability under maximum torsion loads and compression stresses during extended-reach drilling operations.
Specifically designed for drill rod applications in deep-well drilling, geothermal exploration, and challenging geological formations, this pipe undergoes rigorous non-destructive testing and quality verification. The combination of superior material properties and precision engineering makes this drill rod tubing ideal for critical applications where equipment reliability, extended service life, and operational safety are paramount concerns.
Specification
| Product Name |
Seamless Alloy Steel Pipe for Oill Well Drilling |
| Material |
4130, 4140, 40Mn2, 45MnMoB, 30CrMnSiA, 4135, 1541 |
| Standard |
ASTM,DIN,GB,JIS |
| Wall Thickness |
3-19mm |
| Outer Diameter |
30-140mm |
| Packing |
Bundle, or with all kinds of colors PVC or as your requirements |
| Surface |
Black painting varnish paint, anti rust oil |
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 |
Mechanical Properties
| Steel Grade |
Deliver Condition |
Tensile Strength
(Mpa)
|
Yield Strength
(Mpa)
|
Elongation
(%)
|
Hardness(HRC) |
| 4130 |
+ SR |
≥813 |
≥690 |
≥15% |
≥24 |
Features
Excellent Microstructure
High Straightness & Low Eccentricity
Low Residual Stresses
Superior Mechanical Properties
Corrosion Resistance
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.
Inspection
Surface Quality Assessment
Dimensional Verification
Ultrasonic Examination
Magnetic Particle Inspection
Radiographic Analysis
Mechanical Property Verification
Tensile Property Analysis
Hardness Assessment
Impact Resistance Evaluation
Spectrochemical analysis
Application
Mine blasting
Water well drilling
Geothermal wells drilling
Fore poling
Coal
Nonferrous metal mining projects
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