steel round bar,material for forged piece and castings (1) Rough Turned (2) Normalized/Q+T/Annealed steel round barAISI4130,S355J2G3,C45,42CrMo4,AISI 4140,AISI 4340,8620,18CrNiMo7-6BG,34CrNiMo6,16/20MnCr5,25CrMo4,AISI 1018,AISI 1045,CK60. Zhangjiagang Yongsheng Casting Co.,Ltd is a leading manufacturer and exporter in China which specializes in producing forging, carbon steels, alloy steels, tool ...