SCM415钢材/精圆/光圆/棒材/毛圆/圆钢/圆棒
SCM2钢材/精圆/光圆/棒..
SCM3钢材/精圆/光圆/棒..
SCM4钢材/精圆/光圆/棒..
SCM415钢材/精圆/光圆..
4140圆钢
35CrMo(圆钢/板材)