42CrMo4圆棒40Cr GCR15 65Mn 16MnCr5 38CrMoal光圆45# ¥6777.00 45#精板40CR圆棒A3冷拉钢60SI2MN弹簧钢T10A圆钢 S50C S45C 50CRVA ¥9.00 按图加工A3 45号#钢板 P20 DC53圆棒CR12MOV模具钢材 H13 D2圆钢 ¥4800.00 模具钢材45号钢 cr12mov skd11 dc53 h13 p20 nak80精光板圆钢棒 ¥7800.00 打孔深孔Cr12M0V加工SKD11 SKD61精板 光板 圆钢P20 45号钢 ¥7.00 调质圆棒40Cr 调质/光轴/研磨棒/光杆圆钢45#号钢/磨光圆/调质棒 ¥3.70