cannonball body semiproduct 炮弹弹体毛坯
Semiproduct for railway vehicles 铁路车辆用半成品
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semi-finished goods , half finished product , work-in-process
The hot forming process of cannonball body semiproduct is mainly composed of four operations: pressing, punching, ironing, and shell nosing.
炮弹弹体毛坯热精密成形过程主要由压型、冲孔、引伸和收口四道工序组成。
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