ASTM A519 4130 Oil Well Drilling Pipe , Seamless Steel Pipe Drill Rod Tubing

ASTM A519 4130 Oil Well Drilling Pipe , Seamless Steel Pipe Drill Rod Tubing

Description

Our ASTM A519 4130 Oil Well Drilling Pipe is a premium seamless steel solution engineered for the toughest oil and gas drilling operations. Manufactured strictly in accordance with ASTM A519 standards, this drill rod tubing guarantees consistent quality and performance.​
Crafted from 4130 alloy steel, it boasts exceptional mechanical properties, including high tensile strength (≥813 MPa) and yield strength (≥690 MPa), making it ideal for withstanding extreme downhole pressures, torque, and vibrations. The chromium-molybdenum composition enhances its toughness and resistance to corrosion, ensuring durability in harsh environments with high temperatures and corrosive fluids.​
The seamless construction eliminates weld seams, a common weak point, providing superior structural integrity. Precision cold-drawing ensures tight tolerances, high straightness, and low eccentricity, facilitating easy installation and reliable connection with drilling equipment.​
Available in a range of sizes (OD: 2 3/8" to 6 5/8", wall thickness: 0.219" to 0.500") and custom lengths, it suits various drilling needs, from onshore to offshore, shallow to deep wells. Each pipe undergoes rigorous testing, including ultrasonic and eddy current inspections, and comes with mill test certificates (MTC) for full traceability.​

Specification

Chemical Composition

Mechanical Properties

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.

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, 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.

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.