易削切钢SUM11 SUM12 SUM21 SUM22 SUM23 SUM25 SUM31 SUM32 SUM22L SUN23L SUM24L SUM31L
1110 1109 1212 1213 1215 1117 12L14 1135 1144
9SMn28.15S20.35S20.45S20.SUM22Y12.Y15.Y15Pb.Y20.Y30.Y40Mn.Y100Pb.Y100Bi.易切削不锈钢：303.303Cu.316F.416.420F.430F.430FR.440F.交货状态：线材、圆钢、拉光棒、磨光棒、六角和方钢、带钢和扁钢、锻件和铸件等
