A519 4130 4140 Oil Well Drilling Pipe , Oilfield Drill Pipe for Oil Exportation

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

Chemical Composition

Mechanical Properties

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.