Each heat exchanger in which heat is exchanged in tubes, hence the designation tubular heat exchanger, comprises not only tubes but also a tubesheet or a tube header where the tubes end. Thousands of joints are required for just one heat exchanger and this underlines the importance of and the reason for an easily reproducible, reliable joint of high quality. When manufacturing heat exchangers no other work process is repeated as frequently as that used to fasten the tubes. Read more...