28Cr4(1.7030)合金结构钢
28Mn69(1.1170)合金结构钢
34Cr4(1.7033)合金结构钢
34CrMo4合金结构钢
30Mn5(1.1170)合金结构钢
36CrNiMo4(1.6511) 合金结构钢
38SMn28(1.0760)易切削钢
41Cr4(1.7035)合金结构钢
635M15合结钢圆钢
13661845828