... carbon spring steel,60#,65#,70#,72A,82B3,Standard:ISO ,DIN,ASTM,JIS ,ect4,Construction:1*7,1*19,6*7,7*7,6 ... *19,7*19,6*37,7*37,6*25,etc5,Mini tensile strength:1770mpa,1570mpa,1670mpa,1860mpa,1960mpa6,High carbon spring steel wire ... (Galvanized,Ungalvanized,coatedPVC/PE/teflon/rubber/SLPE)steel ...