... of horizontal continuous annealing furnace, trolley-type annealing furnace, and vertical annealing furnace. The annealing furnace can be divided ... machining, chemical industry, heavy industry, metallurgy, casting, casting tube factories, forging, flange rings, steel structure, pull wires ... flange ring, pressure vessel, rollers, steel pipe, bulb tube, steel wire, steel ball, casting, forged pieces, ...