... 60Si2Mn, 65Mn, SUP9, SUP7, 55CR3, 50CRV4, SAE5160, SA spring steel flat barOur main distribution Nanjing, Xing Cheng, Daye and other ... on the production of flat wire in the spring or coil spring 30mm below, also suitable for production of the operating ... of the larger leaf spring and coil spring.Our company can offer Xingcheng spring steel, flat steel spring and spring mainly round spot.Common ...