50Mn18Cr4N|宝钢|重钢|太钢
50Mn18Cr4N|宝钢|..
20Mn23Al量大从优
1Cr18Mn12NiN不锈..
7Mn15Cr2Al3V2W..
供应40Mn18Cr3|圆钢..
20Mn23AlV ★★★★★