... , Bicycle, Fitness Equipment, Elevator, Steel Wire Screen, Mattress And Sofa, Umbrella Frame, Electronic Products, ect.Spring Usagecompression spring, torsion spring, extension spring, agricultural ... high carbon steel wire coil is used to make steel wire rope for different usage, spring steel wire, steel core Al strands, galvanized steel wire, galvanized steel strands, prestressing steel wire and ...