[問題] 鋼材購買重量差異
請問各位先進,一般鋼鐵生產公司在型錄上僅有厚度公差
依重量=密度x體積,厚度公差是否可等同重量公差標準
請各位先進協助解答 謝謝
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※ 編輯: eaugh (114.40.205.247), 01/25/2017 07:05:53
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