36CrNiMo4 36CrNiMo6 31CrNiMo8 51CrV6 C18 C20     C20E4 C20M2 C25 C25E4 C25M2   C30 C30E4 C30M2 C35 C35E4 C35M2 C40 C40E4 C40M2 C45 C45E4 C45M2 C50   C50E4 C50M2 C55 C55E4 C55M2 C60 C60E4 C60M2 31CrMo12 33CrAlMo54     41CrAlMo74 20Cr4HH      20CrS4HH 20Cr4HL 20CrS4HL 16MnCr5HH          16MnCrS5HH 16MnCr5HL 16MnCrS5HL 20MnCr5HH 20MnCrS5HH    20MnCr5HL    20MnCrS5HL 

优质进口材料，价格优惠，质量上等，欢迎来电洽谈！