... raw material is quality carbon spring steel. Detailed Product Description1,Name:Spring steelrope, Spring Wire Rope ,Spring steel wire rope with core.2 ... tensile strength:1770mpa,1570mpa,1670mpa,1860mpa,1960mpa6,High carbon spring steel wire (Galvanized,Ungalvanized,coatedPVC/PE/teflon/rubber/SLPE ... dip galvanized steel wire rope7,Diameter:0.15-12mm(carbon spring steel wire ) 1.2-20mm(steel wire rope) ...