34CrMo4 4130 Oil Well Pipe for Critical Applications in the Oil and Gas Industry

34CrMo4 4130 Oil Well Pipe for Critical Applications in the Oil and Gas Industry

Description

We introduce premium-grade 34CrMo4 4130 Oil Well Pipe, engineered to meet the most demanding requirements in critical oil and gas applications. Manufactured to comply with both European (34CrMo4) and American (AISI 4130) material standards, this seamless chromium-molybdenum alloy steel pipe delivers exceptional performance where failure is not an option. The precise chemical composition, featuring optimal levels of chromium (0.90-1.20%) and molybdenum (0.15-0.25%), ensures superior mechanical properties including minimum tensile strength of 813 MPa and yield strength of 690 MPa, making it ideal for high-stress downhole environments.

These pipes undergo specialized heat treatment processes including quenching and tempering (+QT) to achieve enhanced microstructural homogeneity and excellent impact toughness at various temperature ranges. Available in sizes from 30mm to 139.7mm OD with wall thicknesses of 3-19mm, they are specifically designed for critical applications such as high-pressure well completions, sour service environments, deepwater drilling operations, and extended-reach horizontal wells. The material's excellent resistance to sulfide stress cracking and superior fatigue strength ensure reliable performance in H2S-containing environments and high-cycle loading conditions.

Specification

Chemical Composition

Mechanical Properties

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

Aerospace: Employed in airframe structures, undercarriage systems, and propulsion system support elements.
Automotive: Incorporated into safety frame constructions, vehicle frameworks, and shock-absorbing assemblies.
Oil and Gas: Optimized for borehole drilling strings, well casings, and extraction conduits under extreme pressure conditions.
Mechanical Engineering: Adopted for numerous high-performance parts subject to intense mechanical demands.
Construction: Applied in lifting apparatus, architectural span supports, and other load-bearing infrastructures demanding superior strength.