1213易切削钢
9SMn28易切削圆钢
SUM43易切削圆钢
SUM23易切削圆钢
SUM22易切削圆钢
Y30易切削圆钢
Y20易切削圆钢
Y12易切削圆钢
Y40Mn易切削圆钢
Y35Mn易切削圆钢
Y15Mn易切削圆钢