Shell and tube heat exchanger is a large variety of products, the urgent need for new wear, corrosion resistance, high strength materials. China in the development of stainless steel copper alloy composite materials, aluminum-magnesium alloy and silicon carbide and other non-metallic materials have varying degrees of progress, especially in the rapid development of titanium. Titanium on the sea, chlor-alkali, acetic acid, etc. have better resistance to corrosion, such as enhanced heat transfer, the effect will be better, some manufacturing units have a better grasp of titanium processing and manufacturing technology. The spraying of materials, China has introduced from abroad production lines. Aluminum-magnesium alloy has a high corrosion resistance and thermal conductivity, the price cheaper than titanium, should be noted. Domestic energy efficiency and other aspects to improve the performance of heat exchangers to improve heat transfer efficiency, reduce the heat transfer area to reduce the pressure drop, improve the device heat intensity and other aspects of the study has made remarkable achievements. The extensive use of heat exchangers effectively improves the utilization of energy, reduces the cost of enterprises and improves the efficiency.