50WCrV8化學成分50WCrV8硬度是多少
50WCrV8生物學完分50WCrV8生物學完分掌握50WCrV8明日價目50WCrV8房產資訊50WCrV8產品百科50WCrV8生物學完分等情況請見推薦:++++++++++++++++++生物學完分生物學完分++++++++++++++++++50WCrV8材,圓棒,料號:1.2549EN品種:50WCrV8下達規格:ENISO4957道具鋼C0.45-0.55Si0.7-1Mn0.15-,,0.45Pmax,,0.03Smax0.03Cr0.9-1.2Mo1.7-2.2V0.1-0....
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