专业从事于:钢材 高强弹簧 50crv4,50crva 弹簧钢 51crmov4,51crv4,60crmna,60crmna,60si2cra 60si2crva ,60si2mna,70s,60si2mn,77-82b 50-51crv4,50crmnva,55cr3,52crmnv4,55crmna 55simnvb,60crmnb, 弹簧扁钢 sae5160(h),sa387cr12,sup9 工模具钢 工具钢 40-60crni 高强度标准件用钢 b7 管坯 管坯钢 l20mn2,p91,42cr,p22,p12,45mnmob,28mn2 石油管坯 42mnmo7 锅炉管坯 25mng,sa-213-t11,ssw 合金管坯 25mv,30-36mn2v 不锈钢 4130x 合金结构钢 42crmo,20mn2 碳素结构钢 16-50mn 钢连铸圆...