詳細說明
供應(yīng)易削切鋼:1215 1117 12L14 1135 1144 9SMn28.15S20.35S20板材22 Y12.Y15.Y15Pb.Y20.Y30棒材.Y40Mn.Y100Pb.Y100Bi管材. Y12 Y12PB Y15 Y15Pb Y20 Y30 Y35 Y40MN Y45Ca 11SMN30 11SMNPB30 11SMN37? 15SMN13 35S20 36SMN14棒材 36SMNPB14板材 38SMN28材質(zhì)證明 38SMNPB28化學成分