... #, 65Mn, 55SiMnVB, 60Si2Mn, 60Si2MnA, 60Si2CrA, 60Si2CrVA Hot rolled spring steel round bar GradeCSiMnSPCrB55Si70.42-0.601.50-2.000.60-0.90Max ... .0250.70-1.00 we can supply you the spring steel (GB standard) : 65#, 70#, 85#, 65Mn, 55SiMnVB, 60Si2Mn, 60Si2MnA, 60Si2CrA ... , we are able to produce dozens type of spring flat steel from 6*40mm to 20*150mm. 60SiCr7 55Cr 60Si2CrA spring ...