60Si2Mn spring steel flat bar for blade 1)ISO9001,BV Certificates 2)Payment: L/C,T/T 3)Delivery time: 1 week 4)Size: 12*80mm 60Si2Mn spring steel flat bar for bladeSpecification:Material : 65MN,60Si2Mn,55CrMnA,SUP7,SUP9,SUP10,50CrVAStandards: GB/T 1222-2007,JISG 48001:2005Thickness: 4MM-40MM,Width: 35MM-175MM,Length: mainly according export length 6000mm. Chemical Composition: Chemical ...