30CrMo Seamless Oil Well Drilling Pipe Cold Drawn Steel Drill Rod Tube for Superior Mechanical Properties

30CrMo Seamless Oil Well Drilling Pipe Cold Drawn Steel Drill Rod Tube for Superior Mechanical Properties

Description

30CrMo Seamless Oil Well Drilling Pipe, a cold - drawn steel pipe drill rod tube, is a high - performance solution engineered for demanding oil and gas drilling operations. Manufactured from premium 30CrMo alloy steel, this seamless pipe undergoes a precise cold - drawing process, which ensures exceptional dimensional accuracy and a smooth surface finish.

The alloy composition, featuring chromium (around 0.80 - 1.10%) and molybdenum (approximately 0.15 - 0.25%), endows it with superior mechanical properties. It boasts a minimum tensile strength of 860 MPa and a yield strength of 725 MPa, making it highly capable of withstanding extreme pressures, torques, and dynamic loads in deep - well and harsh downhole environments.

Through meticulous heat treatment, such as quenching and tempering, the pipe achieves a uniform microstructure, further enhancing its impact toughness and fatigue resistance – crucial for the prolonged and repetitive stresses experienced by drill rods. Whether utilized in high - pressure, high - temperature (HPHT) wells, corrosive formations, or extended - reach drilling scenarios, the 30CrMo seamless pipe delivers reliable performance, reducing the risk of premature failure and contributing to the efficiency and safety of drilling operations. Each pipe undergoes rigorous quality inspections to ensure it meets the strict standards required for oil well drilling applications.

Specification

Chemical Composition

Mechanical Properties

Delivery Condition
+SR (Stress Relieved)

+N (Normalized)

+QT 

Features

High Strength and Durability: Suitable for applications requiring high strength and robust performance.
Good Weldability: Can be easily welded and fabricated, making it versatile for various construction and engineering purposes.
Thermal Stability: Maintains mechanical properties at high temperatures, ideal for high-temperature applications.
Corrosion Resistance: The alloying elements provide good resistance to corrosion, extending the pipe’s service life.
Versatility: Used in a wide range of industries, including aerospace, automotive, oil and gas, and construction.

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.