You can buy machines, but you cannot buy 40 years of experience. Winco specializes in small diameter high‑frequency welded (HFW) precision steel tubes, using prime materials from Baosteel, Shandong Steel, Shougang and Angang. With a core team averaging over 40 years of hands‑on experience, we consistently hold OD tolerances within ±0.1mm. From fitness equipment and smart lift desks to automotive components, Winco delivers “zero‑defect” invisible skeletons for high‑end manufacturing. Every tube is rust‑preventive oil dipped — ready to use, bright and clean upon delivery.