The extrusion and piercing die was developed based on the technical analysis on the shaping characteristics of deep taper pipe with hole.
针对带孔深锥形管件的成形特点进行了工艺分析，确定了成形方案，设计了锥形管挤压模和冲孔模。
The extrusion and piercing die was developed based on the technical analysis on the shaping characteristics of deep taper pipe with hole.
针对带孔深锥形管件的成形特点进行了工艺分析，确定了成形方案，设计了锥形管挤压模和冲孔模。
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