最新 热轧方钢 方钢,六角钢,扁钢,超厚钢板,Q345BCD,16Mn,45#,65mn,60si2mn,20crmnti,42crmo,35crmo,1cr13-4cr13等产品,规格30mm-250mm。 www.dfgsgg.com 网络应用 2023-12-17