WHEN INTERCOOLER CORES ARE TO BE REPLACED
Tube sheets are reusable. In the event that they are, the tube sheets are cut away from the fin section. The old tubes are removed from the tube sheets and reamed to size. The tube sheet is then sandblasted, sheet metal will then be inspected and replaced where necessary and new tubes (available out of any materials including stainless steel) will then be installed. The tubes are expanded into the fins by mechanical expansion and will also be mechanically expanded into the tubesheets. The tubes will then be cut flush with the tubesheets and roller expanded, brazed or welded into the tubesheets as required.