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洛Cr12 铬Cr12MoV模具钢板材料DC53 SKD11 D2 LD模具圆钢圆棒光板
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Cr12MoV模具钢板高淬透性高硬度耐磨Cr12模具钢光板精板
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Cr12MoV模具钢板 预硬冲子料 真空热处理熟料 硬料 硬度HRC58-61
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Cr12 Cr12MoV模具钢板40NiCrMo16圆棒X165CrV12钢材Φ3.3-Φ280MM
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45号光板Cr12MoV模具钢板40Cr 42CrMo合金钢Q345B 65Mn弹簧钢精
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cr12MOV模具钢板P20定制零切718中厚板skd11淬火料DC53圆棒精光板
