steam - gas, steam-liquid,liquid- liquid, and it transfers heat to liquid anti-clogging principle High-grade, precision 2012 hot sale ss304 4m2 spiral plate heater exported to India !!!(for sale)The spiral heat exchanger is well received by our customer.application:applied in industries of chemistry, petroleum, solvent, medicine, food, light industry, textile, metallurgy, steel rolling, coking, ...