The 500mm hydraulic hdpe fusion machine is divided according to the usage scene: air-cooled cooling depends on the calorific value, air-cooling can be used for low-frequency use, and water-cooling is selected for high-frequency use. 500mm hydraulic hdpe fusion machine is divided by power: generally below 25KVA is air-cooled, 25-50KVA can be air-cooled or water-cooled. Above 50KVA generally...