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Introduction

Swaging is a process that is used to reduce or increase the diameter of tubes and/or rods.

This is done by placing the tube or rod inside a die that applies compressive force by hammering radially. This can be further expanded by placing a mandrel inside the tube and applying radial compressive forces on the outer diameter. Thus, the inner diameter can be a different shape, for example a hexagon, and the outer is still circular.