... Sample to support the new cooperation !!!! Oil quenching & tempering spring steel wire 1.Material:50CrSiA,55CrSiA,60Si2MnA,67CrVA,65Mn,70#,67A,67B,72A ... 5.Packing: spool or coil,Wrapped by plastic 6.MOQ: 1 Ton/Tons 7.Standard: GB/T18983-2003,ASTM A229M,ASTM ... A232M,ASTM A401M,JIS G3560 1 Company and Production process pictureCertificatePackingOther product pictures