

With years of experience in manufacturing Cold Drawn Seamless Tubes, we provide customer satisfaction through manufacturing and customization.
At Bos, we care about you and your company. We specialize in Cold Drawn Seamless Tube customization, material selection, and manufacturing, and provide excellent service according to your needs.




Enhanced Mechanical Properties: The inclusion of alloying elements like chromium and molybdenum significantly improves yield strength (ranging from 415 MPa to over 585 MPa, depending on the grade) and hardness, enabling the tubing to perform under extreme mechanical stress .
Superior Corrosion and Heat Resistance: Alloy compositions such as 15CrMo and 12Cr1MoVG offer exceptional resistance to oxidation and sulfidation, making the tubing suitable for high-temperature applications up to 540°C .
Dimensional Precision and Consistency: Advanced cold-drawing and honing processes ensure tight tolerances (e.g., outer diameter deviations within ±0.05 mm) and excellent surface finish, reducing friction and wear in dynamic applications .
Economic Efficiency: The lightweight yet robust nature of Alloy Steel Mechanical Tubing minimizes material usage and machining costs while extending service life, lowering the total cost of ownership


Our dedication to quality begins with raw material selection and extends through every stage of production. We employ state-of-the-art manufacturing protocols, including statistical process control and non-destructive testing, to guarantee that every batch of Alloy Steel Mechanical Tubing meets exacting standards . As a vertically integrated manufacturer, we maintain strict oversight over processes like heat treatment and ultrasonic testing, ensuring traceability and consistency .
Our technical team collaborates closely with clients to develop customized solutions, whether for prototyping or large-scale production. By prioritizing innovation and adherence to certifications such as ISO 9001 and AS9100, we deliver tubing that not only meets but exceeds performance expectations . Moreover, our global logistics network ensures timely delivery, supporting just-in-time manufacturing for clients worldwide.

These tubes are typically made from carbon steels (e.g., 1020, 1045, 4130), alloy steels (e.g., 4140, 4340), and sometimes stainless steels. The choice depends on the required strength, corrosion resistance, and application.