Oil cooler can be divided into air-cooled oil cooler and water-cooled oil cooler according to different heat exchange media, which are mainly used to cool hydraulic oil and lubricating oil; Oil cooler is widely used in plastic machinery, engineering machinery, mining machinery, automobile, steel, wind power, aerospace and other industries. There are many kinds of oil coolers. Water cooled oil coolers are divided into tube oil coolers and plate oil coolers. Plate oil coolers are divided into detachable plate oil coolers (detachable plate heat exchangers) and brazed plate oil coolers (brazed plate heat exchangers); Air cooled oil coolers are divided into segment type and plate fin type.