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推荐18CrNiMo7-6钢板 20Cr2Ni400 17Cr2Ni2Mo 18Cr2Ni4WA 圆棒
20CrNi3元钢棒料Monel 400钢棒圆棒20Cr2Ni4材料钢材N07750棒材
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G52986 NM360耐磨钢 20Cr2Ni4A 35SiMn圆钢 NM400A MN13耐磨钢板e
轴承钢GCr15SiMn G20Cr2Ni4A GCr18Mo SWRCH22A HRB400圆钢棒材
轴承钢GCr15SiMnG20Cr2Ni4AGCr18MoSWRCH22AHRB400棒材圆钢