Warmer Equipments [P] Limited supplies Semi Welded Plate Heat Exchanger. Warmer Equipments [P] Limited is the manufacturer of critical equipments for Dairy, food, beverage, and chemical companies with the product like plate heat exchanger, stainless steel centrifugal pump, evaporators, dryers etc. Semi Welded Plate Heat Exchanger is suitable for cooling and heating of various liquids. Semi Welded Plate Heat Exchanger has been provided with frame and pressure plate which is available in carbon steel / CS cladded with SS. This heat exchanger is also used for condensation, evaporation of refrigerant.