... heat exchanger, spiral plate heat exchanger, threaded locking-ring heat exchanger and shell and tube heat exchangers.2.Shell and tube heat exchanger contains: fixed tube-sheet heat exchanger, U-tube heat exchanger ... and highly flammable, highly toxic, highly corrosive medium.7.Related equipment: coolers, condensers, heater, preheater, vaporizers, reboilers, evaporators, dryers, steam wok ...