What is Pillow plate heat exchanger?——Pillow plate heat exchanger is made of laser welded pillow plates. Two——plates are  welded together to form flow channel. Pillow plate can be——custom-made per customer’s process requirement. It is used in food,——HVAC, drying, grease, chemical, petrochemical, and pharmacy, etc.——Plate material could be carbon steel, austenitic steel, duplex steel,——Ni alloy steel, Ti alloy steel, etc.