| 摘要 |
The method and apparatus permit a relatively long metal tubing stock to be finished to any desired tapered shape through a single-pass operation. The apparatus is provided in the form of a tandem configuration including any number of individual swaging units each having the identical construction including the same working parts and assemblies. The grooved roll arrangement associated with the tandem-configured swaging units is used as a preliminary step, and forms an initial metal tubing stock to a multiple-stepped shape.
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