A519 4130 4140 Oil Drilling Pipe , Alloy Drill Pipe for Nonferrous Metal Mining Projects

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.

Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is specialized in producing and selling high-end bearing tubes, auto alloy tubes, titanium and titanium alloy tubes, nickel and nickel-based alloy tubes, refrigerator condenser tubes, aluminum and aluminum alloy tubes and the like.

The company focuses on the development of new products, and has successively developed high diameter-wall ratio titanium-molybdenum-nickel alloy seamless steel tubes, nuclear power plant reactor driving mechanism used martensite stainless steel seamless steel tubes, auto critical components used alloy steel tubes, high-end refrigerator used corrosion-resistance galvanized condenser tubes, marine engineering and complex environment oilfield used high-strength corrosion-resistance G3 tubes, among which, nuclear power plant reactor driving mechanism used martensite stainless steel seamless steel tube has obtained high-tech product certificate of the province.

At present, the company has obtained authorization for 7 patents for invention, and 8 patents for utility model.