As the liquid cooled heat exchanger in the product, the refrigeration market production of shell and tube heat exchanger of the enterprise is about more than 100, but specializing in the production of shell and tube heat exchanger with only a dozen or so. Wuhan Qiao Xin, Nanjing Jinling, Foshan rudder are relatively outstanding production enterprises. Shell and tube type heat exchanger used mainly in the central air-conditioning, refrigeration and other large equipment. This is because of the properties, shell and tube type heat exchanger once faults occur to affect the whole system, will cause a great loss, therefore, shell and tube type heat exchanger in the quality requirements of high. In order to ensure the quality of products, shell and tube type heat exchanger in the production when it attaches great importance to the selection. " In the choice of raw materials, strict requirement, we will choose the quality and stability of the material, because the heat exchanger is a bad will affect the whole system, so the choice of materials to be careful. " Wuhan Qiao Xin Su Zong said. Because of the shell and tube type heat exchanger, once the selection is not good, at the beginning of may use problem is not obvious, but after a period of time problems will be revealed, and as the supporting enterprises, especially the large products supporting enterprises, once there is no reputation, etc. to kill his own market.