... forvacuum bell type furnace train, bright annealing furnace for stainless pipes or rippled pipes, copper brazing furnace, pit type annealing furnace, ... furnace, crank type normalizing production line, pusher-type H/T furnace production line train, pusher-type crank type ... -type quenching and tempering production line, cast iron type H/T furnace, pusher-type quenching and tempering production line, ...