2.8mm 72B high-carbon mattress spring

This product is a 2.8mm 72B mattress spring steel wire, which is a type of high-carbon steel wire and is specially designed for the manufacture of mattress springs. It is made of high-quality 72B high-carbon steel as raw material and processed by precise cold drawing technology. From raw materials to the process, it ensures the high quality of the product. The product features outstanding performance, with a tensile strength ranging from 1900 to 2200MPa. It also has excellent elastic properties and can maintain stable elasticity over long-term use. The diameter of the steel wire is precisely controlled at 2.8mm, and the tolerance is strictly limited within ±0.02mm. It features excellent mechanical processing performance and bending performance, with a high surface finish. It is a reliable material choice for the production of medium and large-sized springs. In mattress manufacturing, this steel wire is suitable for edge reinforcement systems or bagged spring structures in load-bearing…