Report - ボイラ用シームレス鋼管 - Nippon Steel & Sumitomo … (ASME CC2180) HCM12＊ (12Cr-1Mo-1W-V-Nb) 火SUS410J2TB VdTÜV 510/2 12Cr-1Mo-0.3V X20CrMoV121 オーステナイト系

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