

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.




Seamless Carbon Steel Hydraulic Tubing is manufactured through an extrusion process that creates a uniform structure without welded seams. This homogeneous construction eliminates potential weak points, making it ideal for extreme pressure applications and critical systems where reliability is paramount. The seamless variety typically conforms to standards such as ASTM A53 Type S .
Welded Carbon Steel Hydraulic Tubing, created by rolling and welding steel strips, offers excellent dimensional consistency and cost efficiency for many medium-pressure applications. Advanced welding techniques, including ERW (Electric Resistance Welding), ensure strong, reliable seams that can perform comparably to seamless tubes in many hydraulic scenarios.
Precision Honed Tubing undergoes an additional internal finishing process that achieves superior surface quality and exact dimensional tolerances. This refinement process ensures optimal performance with piston seals, reduces friction, and extends component life in hydraulic cylinders.
Hard Chrome Plated Tubing features an electroplated chromium layer on the inner surface that provides exceptional corrosion resistance and reduced friction characteristics. This variant is particularly valuable in applications where the tubing is exposed to corrosive environments or requires extended service life without maintenance.


Exceptional Strength-Durability Balance: The inherent material properties of carbon steel provide an optimal combination of tensile strength and impact resistance, allowing hydraulic systems to operate reliably under fluctuating pressure conditions and mechanical shocks.
Superior Fatigue Resistance: Specifically engineered to withstand the pressure cycling inherent in hydraulic operations, high-quality carbon steel hydraulic tubing offers exceptional fatigue life, reducing the risk of sudden failures and associated downtime .
Enhanced Wear Resistance: The hardened interior surfaces, particularly in honed and chrome-plated variants, deliver outstanding resistance to abrasion from fluid flow and contaminant particles, significantly extending service life.
Cost-Effectiveness: While delivering premium performance characteristics, carbon steel hydraulic tubing remains more economical than specialty alloys, providing excellent lifecycle value without compromising on reliability or safety margins.
Weldability and Fabrication Ease: The controlled chemical composition of carbon steel, typically featuring carbon content below 0.30% , ensures excellent weldability and formability, facilitating custom modifications and installation.
