... 304LWelding material99.9% COPPERHeight(mm)539Width(mm)125Thickness(mm)2.32×N(number of plates)+8Weight(Kg)0.25×N ... R22,R23,etc),oil,water,water and glycol mixtures. 2,Used in various equipment:hot pumps,industrial water cooling ... air dryer,water cooler,drinking thoughts,constant temperture refrigerator,heat recollection and circulation,floor heating,indoors and outdoors heating devices air conditioner ...