50WCrV8化學成分50WCrV8硬度是多少
50WCrV8化工營養物質50WCrV8化工營養物質認識50WCrV8令日來報價50WCrV8手游資訊50WCrV8好產品簡單介紹書50WCrV8化工營養物質之類請見介紹書:++++++++++++++++++化工營養物質化工營養物質++++++++++++++++++50WCrV8材,圓棒,料號:1.2549EN鋼號:50WCrV8實行規定:ENISO4957軟件工具鋼C0.45-0.55Si0.7-1Mn0.15-,,0.45Pmax,,0.03Smax0.03Cr0.9-1.2Mo1.7-2.2V0.1-0....
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