The utility model discloses a plunger chip and relates to the shaping technique without cutting scrap.
本实用新型公开了一种冲头，涉及一种无切屑成形技术。
The utility model discloses a special-shaped pipe expanding plunger chip and relates to a special-shaped pipe shaping tool.
本实用新型公开了一种异型扩管冲头，涉及一种异型管成型工具。
The aim of the utility model is to design a special-shaped pipe expanding plunger chip with high pipe expanding efficiency and good quality.
本实用新型的目的是设计一种扩管效率高且质量好的异型扩管冲头。
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