... area 50-500m2 Aluminum pipe and fins, steel casing DescriptionAmmonia blast freezer evaporator is designed for large and small high and ... exchanging coefficients, large refrigerating output, safe use, long life, even blast, quick drop in temperature and energy-saving. It is the ... .2×44100×840×12401.95 Ammonia Evaporator For IQF And Blast Freezer