We have been manufacturing direct replacement and new application tube bundles for Shell & Tube Heat Exchangers. We can duplicate any existing Bundle to include dimensions, materials and performance. We can build "U" tube bundles, straight tube "floating" tube sheet bundles, or we can retube fixed tubesheet heat exchangers when the bundle is not removable. MultiTherm is not locked into any one material. Most bundles tend to be built with copper tubes and steel tubesheets. MultiTherm can offer a wide variety of materials, including: carbon steel, stainless steel, cupro-nickle, admiralty brass and many others. We also offer our special expedited shipment schedules for emergency replacement.