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P20模具钢45号钢板SKD11光圆16MNCR5精光板H13锻打Cr12MoV油钢A3

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青岛厂家45号钢 P20模具钢cr12mov SKD11 d2板材 毛料精光板加工

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Q235B圆棒45号钢冷拉光圆Q345B 20# 35# 50#钢板P20模具钢 A3圆钢

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P20模具钢材45#精板cr12板材cr12mov S136H13 718H钢板SKD11 DC53

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45号钢精板P20模具钢GCR15光板CR12MOV钢板H13毛料38CrMoAl调制料

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模具钢材P20模具钢SKD11圆钢棒DC53钢板块CR12MOV精板材料45号H13

45号钢精板P20模具钢GCR15光板CR12MOV钢板H13毛料38CrMoAl调制料