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2019년 7월 5일

SM490A-FR, Fire Resistant for Building Structure

SM490A-FR, Fire Resistant for Building Structure STEELMAX Steel Story   SM490A 는 용접 구조용 인장강도 490 MPa minimum 의 JIS G 3106 규정의 강재입니다. SM490A-FR 강재는 […]
SM490A-FR, Fire Resistant for Building Structure
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