... 1550′ 250 mm slab CCM,18X29 ball mill, bell type annealing furnace, 1250mm cantilever straightener ,kinds of valve, flange, ... , gear coupling, pin coupling, screw rod, nut, shaft type, sleeve type, roller, supporting roller, working roller, pulley ,wheel and ... bearing steel, spring steel and various alloy steel, and lifting hook forgings of various specifications. The principal equipments are various ...