... : 60Si2Mn, 65Mn, SUP9, SUP7, 55CR3, 50CRV4, SAE5160, SAE Name: spring steel flat bar Material : 65MN,60Si2Mn,55CrMnA,SUP7,SUP9,SUP10,50CrVA ... of Our foreign guests demand for the bulk of spring steel flat bar, So our company prepared a thousands tons of ... ! Therefore, we can provide you with low cost and good quality spring steel flat bar!Name: spring steel flat barMaterial : 65MN,60Si2Mn,55CrMnA,SUP7 ...