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American company Delphi Technologies has introduced a new method for welding metal tubes to solids, sheet metal and other tubes which, it claims, increases design flexibility while reducing cost, investment and weight. Called Annular Deformation Resistance Welding (ADRW), the process creates joints through the deformation and displacement of nugget material at the interface. Use of tubular structures becomes much easier. For more information, contact richard. gotch@m-eng. com