... mill certificate:according EN10204 3.1 BStraigthness:2mm in 1000mm Round bar lengthSpecification Elongation(L=5D)=16% Min.Other grade:Carbon Steel:C45 ... ,ASTM A105,42CrMo4,S355J2G3,16MnCr5,20MnCr5,18CrNiMo7-6,39CrNiMo3, 17CrNiMo6,21CrMoV511,56NiCrMoV7, Manufacturer:Jiangsu Zhuhong Forging Co.,Ltd 34CrNiMo6 Forged Round bar