... High-grade, precision 2012 ss304 4m2 spiral plate heater exported to India application:applied in industries of chemistry, petroleum, solvent, medicine, ... , metallurgy, steel rolling, coking, etc. feature: bring in contemporary international advanced heat exchanger technology;High leak-proof qualityEnergy savingEasy maintenance ... and passivation 2012 ss304 4m2 spiral plate heater exported to India