AISI 4130 Alloy Steel Seamless Oil Well Pipe, Steel Pipe for Casing Tube

Description

Engineered for exceptional performance in critical oil and gas operations, our AISI 4130 Alloy Steel Seamless Pipe is the optimal solution for casing tubes and downhole components. This chromium-molybdenum (chromoly) alloy delivers a superior balance of strength, toughness, and environmental resistance essential for harsh well environments.

Unmatched Strength & Durability: The inherent properties of AISI 4130 chromoly steel provide significantly higher tensile strength and yield strength compared to standard carbon steels. This translates to pipes capable of withstanding extreme downhole pressures, mechanical stresses during installation and operation, and resistance to deformation or collapse in deep wells. The thick-wall options further enhance pressure containment and structural integrity.

Superior Fatigue & Impact Resistance: The alloy composition and seamless manufacturing process ensure excellent fatigue life. This is crucial for pipes subjected to cyclic loading, vibrations, and potential impacts encountered during drilling, completion, and production phases. The material's inherent toughness minimizes the risk of sudden failure.

Enhanced Corrosion & Sulfide Resistance: While primarily valued for its mechanical properties, the chromium content in AISI 4130 offers improved resistance to corrosion compared to plain carbon steels. This provides an added layer of protection against wellbore fluids, including mild sour environments containing H₂S, extending service life and reducing failure risk.

Precision Seamless Construction: Manufactured as seamless tubing, these pipes eliminate weld seams – a common point of weakness. This results in a perfectly uniform, homogenous structure with consistent wall thickness throughout its length, ensuring reliable performance under high pressure and maximizing resistance to leaks or burst failures.

Conformance & Quality: Produced to stringent international standards relevant to oilfield tubulars (such as API specifications implied by the application, alongside referenced standards like ASTM A106 21. Guarantees dimensional accuracy, material traceability, and performance consistency essential for oil well safety and efficiency.

Specification

Chemical Composition

Mechanical Properties

Process Flow

Material Sourcing
Premium-grade alloy steel is meticulously selected as the base material to ensure superior performance and durability.

Forming Operations
Pipes are manufactured through either thermo-mechanical rolling or cold deformation processes to achieve precise dimensional specifications and geometric tolerances.

Thermal Processing
A comprehensive heat treatment regimen is applied—incorporating normalizing, quenching, and tempering stages—to develop the desired metallurgical properties and mechanical characteristics.

Quality Verification
Rigorous inspection protocols are implemented, including non-destructive examinations (e.g., ultrasonic testing), hydrostatic pressure validation, and precision dimensional metrology.

Final Processing
Surface finishing treatments are performed alongside ultimate quality assessments to guarantee full compliance with international standards and customer requirements.

Features

Excellent microstructure
High straightness
Low residual hoop stresses
Tight tolerances, low eccentricity

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.