Used for coal mill As of branch of Zhuda Group, Tangshan Guofeng Metallurgical ... -ton electrical arc furnace, 45-ton ladle furnace, 45-VOD furnace, 90-ton vacuum pouring furnace, 15-ton electric slag furnace, double frequency induction hardening ... cylinder, bearing chock, rolling mill housing, rotary kiln wheel band, coal mill gear, wire rope drum, hollow shaft and circular orbit ...