1.4926, X21CrMoV12-1, 1.4923, X22CrMoV12-1 STEELMAX Steel Story 재질 번호 1.4926, 재질 이름 X21CrMoV12-1 강재는 DIN SEW 555 규정 재료이고 지금은 1.4923, X22CrMoV12-1 EN 10269, EN […]
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