According to technical data, some air compressors adopt aluminum plate-fin heat exchanger while others adopt shell and tube heat exchanger. We finished an customized order for special customer who needs shell and tube heat exchanger for his machine. The heat tube of water cooler is made of stainless steel, bare one without rolling fin outside which is better to resist pollution. The product adopts the immovable tube-plate which is the traditional structure and has high cooling effect. It's suitable for heat transfer in high-temperature medium from hydraulic oil or natural air to water.