... the spring steel (GB standard) : 65#, 70#, 85#, 65Mn, 55SiMnVB, 60Si2Mn, 60Si2MnA, 60Si2CrA, 60Si2CrVA Spring steel Dimensions: 10- ... 300mm Hot rolled spring steel 65#GradeCSiMnPSCrNi65#0.62 0.700 ... / Cold drawn, Black / PeeledApplication: Auto manufacture, spring wireWith the short stress production line that can finish ...