2019년 8월 28일

1.7108, 61SiCr7, SUP6, SUP7, Spring Steel

1.7108, 61SiCr7, SUP6, SUP7, Spring Steel STEELMAX Steel Story   1.7108 — Steel Number, 61SiCr7 — Steel Name, 이전 규격 60SiCr7 재질은 열간압연, QT 열처리로 강도를 […]
1.7108, 61SiCr7, SUP6, SUP7, Spring Steel
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