Are you troubled by poor surface finish and insufficient straightness of cold-drawn tubes?

     As a veteran manufacturer deeply rooted in the hydraulic cylinder tube industry, we fully understand the importance of quality to our customers. The surface finish of Jianlida's cold-drawn tubes can stably reach Ra 0.2-0.4μm, with a smooth and delicate inner surface free of any burrs. They fit seamlessly during assembly, fundamentally eliminating jamming problems. Their straightness is strictly controlled within 0.2-0.25mm per meter, ensuring the entire tube is straight and regular, achieving precise alignment whether for long-distance installation or precision fitting.

     Such quality stems from our solid strength. In our 15,000-square-meter standardized workshop, advanced production equipment operates continuously. Each process, from raw material selection to finished product inspection, is supervised by dedicated personnel. We only use high-quality carbon steel such as 20#, 45#, and 27SiMn to ensure material stability from the source. The ovality and wall thickness deviation are controlled within 3%, and the dimensional tolerance accurately meets H7, H8, and H9 grades, fully matching the requirements of high-end machinery.

     What makes customers even more at ease is our 2,000-ton inventory, where over 1,000 specifications of cold-drawn tubes are readily available. In particular, the 27SiMn cold-drawn tubes are in sufficient stock and can be shipped within 24 hours. Many well-known domestic hydraulic cylinder enterprises have maintained long-term cooperation with us, and their trust is the best proof of our quality.

     When purchasing cold-drawn tubes, reliability and convenience are the key priorities. With 16 years of quality accumulation, Jianlida crafts every cold-drawn tube into a "worry-free tube", so you no longer have to fret about surface finish or straightness. Feel free to contact us whenever you need!