2022년 4월 2일

KSFA90, Forging Alloy Nippon Kaiji Kyokai

KSFA90, Forging Alloy Nippon Kaiji Kyokai STEELMAX Steel Story   KSFA90 재질은 저합금강 단강품 (低合金鋼 鍛鋼品) 으로 일본 선급협회 (Nippon Kaiji Kyokai : 日本船級協會 : ClassNK) […]
KSF60, KFSA80, NK Standard, Forging Steel
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