8-2, 線材球化爐(STC爐)之製作安裝     日本大同特殊鋼設計 STC(Short Time Circle) 爐是日本大同特殊鋼設計研發之特殊鋼線材之多用途 (球化, 調質等) 熱處理爐 Fabrication and installation of STC(Short Time Circle)furnace, designed By Daido Steel of Japan. STC is a multi purpose furnace for special steel wire coils, developed By Daido steel of Japan