40MnBH 齿轮圆钢
20MnCr5齿轮圆钢
16MnCr5齿轮圆钢
2Cr12NiMo1W1V 汽轮机用钢
17Cr2NiMo圆钢
G20Cr2Ni2Mo齿轮圆钢
17CrMnBH齿轮圆钢
20CrMnTiH齿轮钢