... delivery GOODS DESCRIPTIONG:1,General spring steel wire 2,clutch or suspension spring steel wireMATERIAL: SUP12(55CrSiA); 65Mn; 50CrVA; 60CrVA; ... General spring steel wire less than or equal 70Mpa;clutch or suspension spring steel wire less than or equal 60Mpad<3.0mm winding test0.7mm ... REMARK:if inquire material 57b,72B,82B,60Si2CrA,55CrSiV,60Si2CrVA or accoridng with YB/T5103,YB/T5104,JISG3560-94,we ...