... of heat exchange,on the stucture, inside the radiator tube,it have another finned, finned, can aggrandize the area ... market. scope of application:oil pressure system,lubrication system,transmission system, shipping oil perssure system,automobile oil pressure system,power system ... 609 G 1/215L/min12BAR15BAR25042W Industrial Machine Hydraulic Oil Cooler Plate-Fin Heat Exchanger, Air Coolers (type:AL-609)