... , forvacuum cover type furnace train , bright annealing furnace for stainless pipes or rippled pipes, copper brazing furnace, pit ... chained type brazing furnace for water tank, step-in type gas-fired heating furnace, box type protective atmosphere heating ... ), internal trolley type oven, single chanmer annealing furnace, stuffing box type multi-purpose furnace, section heating furnace, large gas ...